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Also granular to massive.","A yellowish-grey to dark straw-yellowish, vitrous mineral with an uneven fracture (From the description of d'Andrada 1800).",6.5,7,"3.8","3.9","3.859","Vitreous, Resinous","Adamantine,Resinous,Dull","Transparent,Translucent","White","Yellow, greenish yellow to emerald-green, dark green; brown, brownish red, brownish yellow; grayish black, black; may be sectored","One color changes from green in the presence of daylight to brown under incandescent light; the other color changes from yellow–green to orange. According to the chemical compositional analysis, unlike common andradite garnets, color-changing garnets have a high content of Fe2+, and their contents of Cr and\u002For V (common elements leading to the alexandrite-like effect) and Ce + Nd are very low. In the UV–Vis–NIR spectra, the wide absorption band near 575 nm is produced by the spin-forbidden transition (5Eg → 3T1g and 5Eg → 3E1g) of eightfold-coordinated high-spin Fe2+, leading to the emergence of transmission windows in the green (centered at 525 nm) and red (above 650 nm) regions, which is the main reason for the alexandrite-like effect of the color-changing andradite. Appears to be from a skarn deposit.[[1]]",[57,58,59,60,61,62],"yellow","green","brown","red","black","white",[62],"Irregular\u002FUneven,Conchoidal","brittle","Isotropic","1.887","Anisotropic","Typically weak","Contact metamorphosed impure limestone","In skarns from contact metamorphosed impure limestones or calcic igneous rocks; in chlorite schists and serpentinites; in alkalic igneous rocks, then typically titaniferous.","Andradite-Grossular Series, Andradite-Schorlomite Series, Andradite-Uvarovite Series.\r\n\r\nAndradite is found in skarns from contact metamorphosed impure limestones or calcic igneous rocks; in chlorite schists and serpentinites; in alkalic igneous rocks,...","Named in 1868 by James Dwight Dana in honor of José Bonifácio de Andrada e Silva [June 13, 1763 Santos, Brazil - April 6, 1838 Niterói, Brazil], Brazilian mineralogist, who first described and named what Dana (1868) defined as a subvariety of andradite. d'Andrada had earlier, in 1800, discovered a yellowish-grey mineral from a mine (Wirum?) near \u003Cl id='14336'>Drammen, Buskerud, Norway\u003C\u002Fl>. He described and named this mineral under the name \u003Cem>allochroite\u003C\u002Fem> (d'Andrada 1800), from the Greek αλλος, another, and χροια, colour, due to the change of colour of the heated product (with sodium ammonium hydrogen phosphate, reagent in blowpipe analysis) when cooling.","2025-12-15 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· 2H\u003Csub>2\u003C\u002Fsub>O","(Na,Ca,◻)\u003Csub>8\u003C\u002Fsub>(Al\u003Csub>6\u003C\u002Fsub>Si\u003Csub>6\u003C\u002Fsub>O\u003Csub>24\u003C\u002Fsub>)(CO\u003Csub>3\u003C\u002Fsub>,SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·2H\u003Csub>2\u003C\u002Fsub>O",5,"2.42","2.49",4530,{"id":226,"name":227,"entrytype":9,"csystem":208,"ima_formula":228,"mindat_formula":228,"hmin":229,"hmax":230,"dmeas":231,"dcalc":232,"primary_image_id":233},1304,"Dolomite","CaMg(CO\u003Csub>3\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>",3.5,4,"2.84","2.876",5744,{"id":235,"name":236,"entrytype":9,"csystem":237,"ima_formula":238,"mindat_formula":239,"hmin":135,"hmax":135,"dmeas":240,"dcalc":241,"primary_image_id":242},1389,"Epidote","Monoclinic","Ca\u003Csub>2\u003C\u002Fsub>(Al\u003Csub>2\u003C\u002Fsub>Fe\u003Csup>3+\u003C\u002Fsup>)[Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>][SiO\u003Csub>4\u003C\u002Fsub>]O(OH)","(CaCa)(AlAlFe\u003Csup>3+\u003C\u002Fsup>)O[Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>][SiO\u003Csub>4\u003C\u002Fsub>](OH)","3.38","3.43",92,{"id":244,"name":245,"entrytype":9,"csystem":36,"ima_formula":246,"mindat_formula":247,"hmin":248,"hmax":135,"dmeas":249,"dcalc":250,"primary_image_id":251},1598,"Franklinite","ZnFe\u003Csup>3+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>","Zn\u003Csup>2+\u003C\u002Fsup>Fe\u003Csup>3+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>",5.5,"5.07","5.163",29732,{"id":253,"name":254,"entrytype":9,"csystem":208,"ima_formula":255,"mindat_formula":255,"hmin":229,"hmax":230,"dmeas":39,"dcalc":256,"primary_image_id":257},1666,"Geerite","Cu\u003Csub>8\u003C\u002Fsub>S\u003Csub>5\u003C\u002Fsub>","5.61",9714,{"id":259,"name":260,"entrytype":9,"csystem":261,"ima_formula":262,"mindat_formula":262,"hmin":135,"hmax":135,"dmeas":263,"dcalc":264,"primary_image_id":265},1708,"Glaucochroite","Orthorhombic","CaMn\u003Csup>2+\u003C\u002Fsup>(SiO\u003Csub>4\u003C\u002Fsub>)","3.407","3.465",10023,{"id":140,"name":141,"entrytype":9,"csystem":36,"ima_formula":142,"mindat_formula":142,"hmin":45,"hmax":46,"dmeas":143,"dcalc":143,"primary_image_id":144},{"id":268,"name":269,"entrytype":9,"csystem":261,"ima_formula":270,"mindat_formula":270,"hmin":211,"hmax":230,"dmeas":271,"dcalc":272,"primary_image_id":273},1812,"Hammarite","Cu\u003Csub>2\u003C\u002Fsub>Pb\u003Csub>2\u003C\u002Fsub>Bi\u003Csub>4\u003C\u002Fsub>S\u003Csub>9\u003C\u002Fsub>","6.734","7.05",10814,{"id":275,"name":276,"entrytype":9,"csystem":208,"ima_formula":277,"mindat_formula":277,"hmin":230,"hmax":230,"dmeas":278,"dcalc":279,"primary_image_id":280},1839,"Heazlewoodite","Ni\u003Csub>3\u003C\u002Fsub>S\u003Csub>2\u003C\u002Fsub>","5.82","5.87",10991,{"id":282,"name":283,"entrytype":9,"csystem":261,"ima_formula":284,"mindat_formula":285,"hmin":229,"hmax":230,"dmeas":286,"dcalc":287,"primary_image_id":11},2060,"Izoklakeite","Pb\u003Csub>26.4\u003C\u002Fsub>(Cu,Fe)\u003Csub>2\u003C\u002Fsub>(Sb,Bi)\u003Csub>19.6\u003C\u002Fsub>S\u003Csub>57\u003C\u002Fsub>","Pb\u003Csub>27\u003C\u002Fsub>(Cu,Fe,Ag)\u003Csub>2\u003C\u002Fsub>(Sb,Bi)\u003Csub>19\u003C\u002Fsub>S\u003Csub>57\u003C\u002Fsub>","6.47","6.505",{"id":289,"name":290,"entrytype":9,"csystem":36,"ima_formula":291,"mindat_formula":291,"hmin":248,"hmax":45,"dmeas":292,"dcalc":293,"primary_image_id":294},2538,"Magnetite","Fe\u003Csup>2+\u003C\u002Fsup>Fe\u003Csup>3+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>","5.175","5.2",65576,{"id":296,"name":297,"entrytype":9,"csystem":36,"ima_formula":298,"mindat_formula":298,"hmin":248,"hmax":135,"dmeas":299,"dcalc":300,"primary_image_id":301},3701,"Sodalite","Na\u003Csub>4\u003C\u002Fsub>(Si\u003Csub>3\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>)O\u003Csub>12\u003C\u002Fsub>Cl","2.27","2.31",22539,{"id":303,"name":304,"entrytype":9,"csystem":237,"ima_formula":305,"mindat_formula":306,"hmin":229,"hmax":229,"dmeas":307,"dcalc":308,"primary_image_id":309},3710,"Solongoite","Ca\u003Csub>2\u003C\u002Fsub>B\u003Csub>3\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>(OH)\u003Csub>4\u003C\u002Fsub>Cl","Ca\u003Csub>2\u003C\u002Fsub>(H\u003Csub>3\u003C\u002Fsub>B\u003Csub>3\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>)(OH)Cl","2.514","2.58",22578,{"id":311,"name":312,"entrytype":9,"csystem":36,"ima_formula":313,"mindat_formula":313,"hmin":115,"hmax":41,"dmeas":314,"dcalc":315,"primary_image_id":316},3729,"Spinel","MgAl\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>","3.6","3.578",80269,{"id":318,"name":319,"entrytype":9,"csystem":320,"ima_formula":321,"mindat_formula":322,"hmin":45,"hmax":45,"dmeas":323,"dcalc":324,"primary_image_id":325},4223,"Vesuvianite","Tetragonal","(Ca,Na)\u003Csub>19\u003C\u002Fsub>(Al,Mg,Fe)\u003Csub>13\u003C\u002Fsub>(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>10\u003C\u002Fsub>(Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>)\u003Csub>4\u003C\u002Fsub>(OH,F,O)\u003Csub>10\u003C\u002Fsub>","Ca\u003Csub>19\u003C\u002Fsub>Fe\u003Csup>3+\u003C\u002Fsup>Al\u003Csub>4\u003C\u002Fsub>(Al\u003Csub>6\u003C\u002Fsub>Mg\u003Csub>2\u003C\u002Fsub>)(◻\u003Csub>4\u003C\u002Fsub>)◻[Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>7\u003C\u002Fsub>]\u003Csub>4\u003C\u002Fsub>[(SiO\u003Csub>4\u003C\u002Fsub>)\u003Csub>10\u003C\u002Fsub>]O(OH)\u003Csub>9\u003C\u002Fsub>","3.32","3.42",6769,{"id":327,"name":328,"entrytype":79,"csystem":11,"ima_formula":11,"mindat_formula":329,"hmin":229,"hmax":230,"dmeas":11,"dcalc":11,"primary_image_id":11},43523,"Vorhauserite","(Mg,Mn)\u003Csub>3\u003C\u002Fsub>(Si\u003Csub>2\u003C\u002Fsub>O\u003Csub>5\u003C\u002Fsub>)(OH)\u003Csub>4\u003C\u002Fsub>",[],[332],{"id":333,"txt":334,"latitude":11,"longitude":11,"country":335},14336,"Drammen, Buskerud, Norway","Norway",1712,[338,342,346,350,354,358,362,366,371,374,378,383,387,391,395,399,403,407,411,415,420,425,429,434,439,443,447,451,455,459,464,469],{"id":339,"year":340,"html":341,"doi":11},17608125,1800,"d' Andrada [e Silva], [José Bonifácio] (1800) Kurze Angabe der Eigenschaften und Kennzeichen einiger neuen Fossilien aus Schweden und Norwegen : nebst einigen chemischen Bemerkungen über dieselben [A brief description of the properties and characteristics of some new fossils from Sweden and Norway : together with some chemical remarks on the same]. \u003Ci>Allgemeines Journal der Chemie\u003C\u002Fi>,  S. 1 Vol. 4 (19). 28-39",{"id":343,"year":344,"html":345,"doi":11},1118643,1868,"Dana, James D., Brush, George Jarvis (1868) \u003Ci>A System of Mineralogy\u003C\u002Fi> (5th ed.). p.882",{"id":347,"year":348,"html":349,"doi":11},16100519,1967,"Manning, P.G. (1967) The optical absorption spectra of some andradites and the identification of 6A, → 4A, 4E(G) transition in octahedrally bonded Fe+3. Canadian Journal of Earth Sciences: 4: 1039-1047.",{"id":351,"year":352,"html":353,"doi":11},16100521,1968,"Isaacs, T. (1968) Titanium substitution in andradites. Chemical Geology: 3: 219-222.",{"id":355,"year":352,"html":356,"doi":357},6156,"Howie, R. A., Woolley, A. R. (1968) The role of titanium and the effect of TiO2 on the cell-size, refractive index, and specific gravity in the andradite-melanite-schorlomite series. \u003Ci>Mineralogical Magazine and Journal of the Mineralogical Society\u003C\u002Fi>,  36 (282) 775-790 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1968.036.282.04'>doi:10.1180\u002Fminmag.1968.036.282.04\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_36\u002F36-282-775.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1968.036.282.04",{"id":359,"year":360,"html":361,"doi":11},16100522,1970,"Manning, P.G., Harris, D.C. (1970) Optical absorption and electron-microprobe studies of some high-Ti andradites. The Canadian Mineralogist: 10: 260-271.",{"id":363,"year":364,"html":365,"doi":11},525634,1971,"Novak, G. A., Gibbs, G. V. (1971) The crystal chemistry of the silicate garnets. \u003Ci>American Mineralogist\u003C\u002Fi>,  56 (5-6) 791-825 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM56\u002FAM56_791.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":367,"year":368,"html":369,"doi":370},180064,1974,"GUSTAFSON, W. I. (1974) The Stability of Andradite, Hedenbergite, and Related Minerals in the System Ca-Fe-Si-O-H. \u003Ci>Journal of Petrology\u003C\u002Fi>,  15 (3). 455-496 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1093\u002Fpetrology\u002F15.3.455'>doi:10.1093\u002Fpetrology\u002F15.3.455\u003C\u002Fa>","10.1093\u002Fpetrology\u002F15.3.455",{"id":372,"year":368,"html":373,"doi":11},526346,"Lion, Juhn G. (1974) Stability relations of andradite-quartz in the system Ca-Fe-Si-O-H. \u003Ci>American Mineralogist\u003C\u002Fi>,  59 (9-10). 1016-1025 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM59\u002FAM59_1016.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":375,"year":376,"html":377,"doi":11},526595,1976,"Suwa, Yoshiko, Tamai, Yozo, Naka, Shigeharu (1976) Stability of synthetic andradite at atmospheric pressure. \u003Ci>American Mineralogist\u003C\u002Fi>,  61 (1-2) 26-28 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM61\u002FAM61_26.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":379,"year":380,"html":381,"doi":382},88632,1977,"SHOJI, TETSUYA (1977) The stability of andradite in H2O-CO2 mixtures. \u003Ci>The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists\u003C\u002Fi>,  72 (11) 399-411 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2465\u002Fganko1941.72.399'>doi:10.2465\u002Fganko1941.72.399\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Fwww.jstage.jst.go.jp\u002Farticle\u002Fganko1941\u002F72\u002F11\u002F72_11_399\u002F_pdf' class='refpdflink'>\u003C\u002Fa>","10.2465\u002Fganko1941.72.399",{"id":384,"year":385,"html":386,"doi":11},527028,1978,"Taylor, Bruce E., Liou, Juhn G. (1978) The low-temperature stability of andradite in C-O-H fluids. \u003Ci>American Mineralogist\u003C\u002Fi>,  63 (3-4) 378-393 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM63\u002FAM63_378.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":388,"year":389,"html":390,"doi":11},528779,1989,"Kingma, Kathleen J., Downs, James W. (1989) Crystal-structure analysis of a birefringent andradite. \u003Ci>American Mineralogist\u003C\u002Fi>,  74 (11-12) 1307-1316 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM74\u002FAM74_1307.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":392,"year":389,"html":393,"doi":394},151830,"Kühberger, A., Fehr, T., Huckenholz, H. G., Amthauer, G. (1989) Crystal chemistry of a natural schorlomite and Ti-andradites synthesized at different oxygen fugacities. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  16 (8) 734-740 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fbf00209694'>doi:10.1007\u002Fbf00209694\u003C\u002Fa>","10.1007\u002Fbf00209694",{"id":396,"year":397,"html":398,"doi":11},528977,1990,"Moecher, David P., Chou, I-ming (1990) Experimental investigation of andradite and hedenbergite equilibria employing the hydrogen sensor technique, with revised estimates of Δƒ,Gom,298 for andradite and hedenbergite. \u003Ci>American Mineralogist\u003C\u002Fi>,  75 (11-12) 1327-1341 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM75\u002FAM75_1327.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":400,"year":401,"html":402,"doi":11},529122,1991,"Madon, Michel, Gilibarguchi, Jose I., Via, Julian, Girardeau, Jacques (1991) Characterization and thermodynamic properties of andradite, Ca3Fe2Si3O12. \u003Ci>American Mineralogist\u003C\u002Fi>,  76 (7-8) 1249-1260 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM76\u002FAM76_1249.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":404,"year":401,"html":405,"doi":406},151914,"Hofmeister, A.M., Chopelas, A. (1991) Vibrational spectroscopy of end-member silicate garnets. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  17 (6). 503-526 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fbf00202230'>doi:10.1007\u002Fbf00202230\u003C\u002Fa>","10.1007\u002Fbf00202230",{"id":408,"year":401,"html":409,"doi":410},76622,"Zhang, Zheru, Saxena, S. K. (1991) Thermodynamic properties of andradite and application to skarn with coexisting andradite and hedenbergite. \u003Ci>Contributions to Mineralogy and Petrology\u003C\u002Fi>,  107 (2) 255-263 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fbf00310711'>doi:10.1007\u002Fbf00310711\u003C\u002Fa>","10.1007\u002Fbf00310711",{"id":412,"year":413,"html":414,"doi":11},16100527,1993,"Armbruster, T., Geiger, C.A. (1993) Andradite crystal chemistry, dynamic X-site disorder and structural strain in silicate garnets. European Journal of Mineralogy: 5: 59-71.",{"id":416,"year":417,"html":418,"doi":419},189167,1996,"Pilati, T., Demartin, F., Gramaccioli, C. M. (1996) Atomic displacement parameters for garnets: a lattice-dynamical evaluation. \u003Ci>Acta Crystallographica Section B Structural Science\u003C\u002Fi>,  52 (2) 239-250 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs0108768195010925'>doi:10.1107\u002Fs0108768195010925\u003C\u002Fa>","10.1107\u002Fs0108768195010925",{"id":421,"year":422,"html":423,"doi":424},127681,1998,"Armbruster, Thomas, Birrer, Julia, Libowitzky, Eugen, Beran, Anton (1998) Crystal chemistry of Ti-bearing andradites. \u003Ci>European Journal of Mineralogy\u003C\u002Fi>,  10 (5) 907-921 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1127\u002Fejm\u002F10\u002F5\u002F0907'>doi:10.1127\u002Fejm\u002F10\u002F5\u002F0907\u003C\u002Fa>","10.1127\u002Fejm\u002F10\u002F5\u002F0907",{"id":426,"year":427,"html":428,"doi":11},16962883,2001,"(2001) Andradite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fandradite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":430,"year":431,"html":432,"doi":433},152872,2002,"Becker, U., Pollok, K. (2002) Molecular simulations of interfacial and thermodynamic mixing properties of grossular-andradite garnets. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  29 (1) 52-64 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs002690100211'>doi:10.1007\u002Fs002690100211\u003C\u002Fa>","10.1007\u002Fs002690100211",{"id":435,"year":436,"html":437,"doi":438},64258,2006,"Teertstra, D. K. (2006) Index-of-refraction and unit-cell constraints on cation valence and pattern of order in garnet-group minerals. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  44 (2). 341-346 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2113\u002Fgscanmin.44.2.341'>doi:10.2113\u002Fgscanmin.44.2.341\u003C\u002Fa>","10.2113\u002Fgscanmin.44.2.341",{"id":440,"year":441,"html":442,"doi":11},16100531,2010,"Badar, M. A., Akizuki, M., Hussain, S. (2010) Optical anomaly in iridescent andradite from the Sierra Madre Mountains, Sonora, Mexico. The Canadian Mineralogist: 48: 1195-1203.",{"id":444,"year":445,"html":446,"doi":11},16100532,2011,"Adamo, I., Gatta, G.D., Rotiroti, N., Diella, V., Pavese, A. (2011) Green andradite stones: gemmological and mineralogical characterisation. European Journal of Mineralogy: 23: 91-100.",{"id":448,"year":445,"html":449,"doi":450},64877,"Ghosh, B., Morishita, T. (2011) Andradite-uvarovite solid solution from hydrothermally altered podiform chromitite, Rutland ophiolite, Andaman, India. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  49 (2) 573-580 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3749\u002Fcanmin.49.2.573'>doi:10.3749\u002Fcanmin.49.2.573\u003C\u002Fa>","10.3749\u002Fcanmin.49.2.573",{"id":452,"year":453,"html":454,"doi":11},16100533,2013,"Badar, M., Niaz, S., Hussain, S., Akizuki, M. (2013) Lamellar texture and optical anomaly in andradite from the Kamaishi mine, Japan. European Journal of Mineralogy: 25: 53-60.",{"id":456,"year":453,"html":457,"doi":458},397203,"Grew, E. S., Locock, A. J., Mills, S. J., Galuskina, I. O., Galuskin, E. V., Hålenius, U. (2013) Nomenclature of the garnet supergroup. \u003Ci>American Mineralogist\u003C\u002Fi>,  98 (4) 785-811 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2013.4201'>doi:10.2138\u002Fam.2013.4201\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FAM98_785.pdf' class='refpdflink'>\u003C\u002Fa>","10.2138\u002Fam.2013.4201",{"id":460,"year":461,"html":462,"doi":463},90698,2017,"NAKAMURA, Yurie, KURIBAYASHI, Takahiro, NAGASE, Toshiro, IMAI, Hiroyuki (2017) Cation ordering in iridescent garnet from Tenkawa village, Nara prefecture, Japan. \u003Ci>Journal of Mineralogical and Petrological Sciences\u003C\u002Fi>,  112 (2) 97-101 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2465\u002Fjmps.161114a'>doi:10.2465\u002Fjmps.161114a\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Fwww.jstage.jst.go.jp\u002Farticle\u002Fjmps\u002F112\u002F2\u002F112_161114a\u002F_pdf' class='refpdflink'>\u003C\u002Fa>","10.2465\u002Fjmps.161114a",{"id":465,"year":466,"html":467,"doi":468},15711050,2023,"Zhu, Qiaoqiao, Cook, Nigel J., Xie, Guiqing, Ciobanu, Cristiana L., Ji, Yunhao (2023) Determination of skarn garnet compositions using Raman spectroscopy. \u003Ci>Journal of Raman Spectroscopy\u003C\u002Fi>, 54 (2) 217-224 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1002\u002Fjrs.6472'>doi:10.1002\u002Fjrs.6472\u003C\u002Fa>","10.1002\u002Fjrs.6472",{"id":470,"year":471,"html":472,"doi":473},17153206,2024,"Xu, Jia-Hong, Yu, Xiao-Yan, Shen, Mei, Yan, Ying, Wang, Guang-Ya (2024) Explaining Color Change in Gem-Quality Andradite Garnet. \u003Ci>Crystals\u003C\u002Fi>,  14 (2). 180 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3390\u002Fcryst14020180'>doi:10.3390\u002Fcryst14020180\u003C\u002Fa>","10.3390\u002Fcryst14020180",[475,485,492,502,510,517,524,531,540,549,555,562,570,577,585,592,601,610,617,624,632,640,648,655,663,672,679,685,693,700,707,714,721,727,733,739,748,756,762,768,775,781,787,794,801,807,813,820,827,834,841,848,856,862,869,877,884,890,895],{"id":476,"source_url":477,"license_code":478,"credit_html":479,"title":480,"description":481,"author":482,"original_width":483,"original_height":484},1388,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10115855","CC BY-SA 4.0","Didier Descouens, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10115855\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Mali.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa> : single crystal (4.2 cm) - Sibinndi, Nioro du Sahel Circle, Kayes Region, Mali.","Didier Descouens",2812,2760,{"id":486,"source_url":487,"license_code":488,"credit_html":489,"title":7,"description":11,"author":11,"original_width":490,"original_height":491},29092,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F114876","CC BY 4.0","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F114876\" rel=\"noopener\">Department of Geology, TalTech\u003C\u002Fa> via Europeana",1000,666,{"id":493,"source_url":494,"license_code":495,"credit_html":496,"title":497,"description":498,"author":499,"original_width":500,"original_height":501},32929,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=7431030","CC BY-SA 3.0","Ra'ike (see also: de:Benutzer:Ra'ike), via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=7431030\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradit (Kalkeisengranat) - Vaskö, Banat, Rumänien.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndratite\" class=\"extiw\" title=\"en:Andratite\">Andradite\u003C\u002Fa> - Locality: Vaskö, Banat, Romania - Exposed in the Mineralogical Museum, Bonn, Germany","Ra'ike (see also: de:Benutzer:Ra'ike)",2200,1760,{"id":235,"source_url":503,"license_code":495,"credit_html":504,"title":505,"description":506,"author":507,"original_width":508,"original_height":509},"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10131768","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10131768\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-43620.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa> (Var.: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FDemantoid\" class=\"extiw\" title=\"en:Demantoid\">Demantoid\u003C\u002Fa>). \u003Cb>Demantoid Garnet (pseudomorph?)\u003C\u002Fb>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Afghanistan (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-14319.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>This odd creature SEEMS to be a single crysatl of another mineral, I know not what, that has been overgrown and deplaced with solid garnet of this rare varietal. These have trickeled out for 3-4 years now, but I have not before seen one like this. Also, the specimens tend to be smaller, mostly thumbnails or small miniature aggregations. this would be one of the larger fine examples of the type. The color is incredibly rich and juicy, like ripe lime skin. The second shot shows a closeup from the side, showing that the termination is thick and fairly euhedral, with clear faces that aren't natural to a garnet but rather look prismatic (perhaps this is after beryl? or quartz?). Fascinating, AND beautiful! 5 x 3.2 x 1.5 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",495,600,{"id":511,"source_url":512,"license_code":495,"credit_html":513,"title":514,"description":515,"author":507,"original_width":340,"original_height":516},1391,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452470","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452470\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-dem40a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Antetezambato (Tetezambato), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAmbanja_District\" class=\"extiw\" title=\"en:Ambanja District\">Ambanja District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FDiana,_Madagascar\" class=\"extiw\" title=\"en:Diana, Madagascar\">Diana (Northern) Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntsiranana_Province\" class=\"extiw\" title=\"en:Antsiranana Province\">Antsiranana Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-210868.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 9.0 x 6.0 x 3.8 cm\n\u003Cdl>\u003Cdt>Andradite var. Demantoid garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is a solid plate of glassy crystals with INTENSE color! Most garnets from here do not form in such tight carpets of fine crystals. They tend to be more dispersed across the matrix. Some people like isolated crystals, and others like \"flash\" and density , which is exemplified in this specimen. The glassy lustre combined with strong color pretty much blow away most other demantoid specimens from other locales, and it ranks high for this locality as well. The massive garnet matrix is slightly concave, and is completely smothered by these brilliantly glssy crystals of demantoid, to 1.2 cm across. A few crystals are doubly terminated; and a few also exhibit clear evidence of hopper growth, a rarity in the garnet family of minerals. Overall this is one of the most densely covered and flashiest specimens I have been able to obtain from the finds here.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1217,{"id":518,"source_url":519,"license_code":495,"credit_html":520,"title":521,"description":522,"author":507,"original_width":509,"original_height":523},32930,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10136158","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10136158\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-61346.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Sinerechenskoe skarn occurrence (Sinerechenskoye; Sineretschenskoye; Sinerechenskiy Mine; Blue River), Kavalerovo Mining District, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-7198.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Deep wine-colored andradite garnets to 0.8 cm., from the prolific Bor Mine in Dalnegorsk. 7.9 x 6.2 x 3.8cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",467,{"id":525,"source_url":526,"license_code":495,"credit_html":527,"title":528,"description":529,"author":507,"original_width":530,"original_height":509},32931,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10144388","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10144388\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-140541.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Garnet Hill, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalaveras_County,_California\" class=\"extiw\" title=\"en:Calaveras County, California\">Calaveras County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalifornia\" class=\"extiw\" title=\"en:California\">California\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-12394.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 7.4 x 5.7 x 3.4 cm.\u003C\u002Fdd>\n\u003Cdd>A cluster of California garnets, to 1 cm, with a luster so fine they almost look wet! They have good transparency, and are a deep brandy to coffee color.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",580,{"id":532,"source_url":533,"license_code":488,"credit_html":534,"title":535,"description":536,"author":537,"original_width":538,"original_height":539},1393,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=86460141","Marie-Lan Taÿ Pamart, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=86460141\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite Antetezambato MNHN Minéralogie.jpg","Andradite from the Antetezambato mine, Antsiranana, Madagascar. Acquired in 2011 through the sponsorship of the Total group. Gallery of Mineralogy of the Muséum National d'Histoire Naturelle in Paris.","Marie-Lan Taÿ Pamart",3750,5000,{"id":541,"source_url":542,"license_code":478,"credit_html":543,"title":544,"description":545,"author":546,"original_width":547,"original_height":548},1394,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=129476997","Burkhard Mücke, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=129476997\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradit aus Wladiwostok.jpg","Andradit aus Wladiwostok in Russland im Museum Mineralogia München","Burkhard Mücke",5100,3655,{"id":550,"source_url":551,"license_code":488,"credit_html":552,"title":553,"description":536,"author":537,"original_width":554,"original_height":554},1395,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=132936002","Marie-Lan Taÿ Pamart, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=132936002\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite Antetezambato MNHN Minéralogie n2.jpg",5018,{"id":556,"source_url":557,"license_code":495,"credit_html":558,"title":559,"description":560,"author":507,"original_width":340,"original_height":561},32936,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452176","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452176\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-dem01b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Antetezambato (Tetezambato), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAmbanja_District\" class=\"extiw\" title=\"en:Ambanja District\">Ambanja District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FDiana,_Madagascar\" class=\"extiw\" title=\"en:Diana, Madagascar\">Diana (Northern) Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntsiranana_Province\" class=\"extiw\" title=\"en:Antsiranana Province\">Antsiranana Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-210868.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 1.7x 1.7 x 1.5 cm\n\u003Cdl>\u003Cdt>Andradite var. Demantoid garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A stunning thumbnail, one that rgabbed me amidst hundreds of simply \"small specimes\" I have seen, as a piece with balance and significance that shows best in this size range, and not just \"a small rock.\" This piece features a large, glassy and gemmy, grass-green demantoid crystal, measuring 1.7 cm in length, framed by smaller crystals. All of them are perched on a natural little pedestal of matrix and the cluster is complete all around. MUCH BETTER in person.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1676,{"id":563,"source_url":564,"license_code":495,"credit_html":565,"title":566,"description":567,"author":507,"original_width":568,"original_height":569},32937,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452182","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452182\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-dem02b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Antetezambato (Tetezambato), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAmbanja_District\" class=\"extiw\" title=\"en:Ambanja District\">Ambanja District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FDiana,_Madagascar\" class=\"extiw\" title=\"en:Diana, Madagascar\">Diana (Northern) Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntsiranana_Province\" class=\"extiw\" title=\"en:Antsiranana Province\">Antsiranana Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-210868.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 3.9 x 3.5 x 3.0 cm\n\u003Cdl>\u003Cdt>Andradite var. Demantoid garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is a cluster of glassy and gemmy, richly green, demantoid crystals reaching 1.1 cm in length. The cluster is rich and bright, and the crystals cascade nicely across the matrix. The display crystals are pristine and show all faces save only for the large crystal on the right , which exhibits the contact outline of a previously attached crystal. The white matrix was actually limestone which has been, amazingly, metamorphosed ( metasomatized) into garnet in ancient geological time. Incredible origins for a matrix garnet specimen, and yet another reason to value this new deposit so highly.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1798,1587,{"id":571,"source_url":572,"license_code":495,"credit_html":573,"title":574,"description":575,"author":507,"original_width":340,"original_height":576},32939,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452274","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452274\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-dem10a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Antetezambato (Tetezambato), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAmbanja_District\" class=\"extiw\" title=\"en:Ambanja District\">Ambanja District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FDiana,_Madagascar\" class=\"extiw\" title=\"en:Diana, Madagascar\">Diana (Northern) Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntsiranana_Province\" class=\"extiw\" title=\"en:Antsiranana Province\">Antsiranana Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-210868.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 6.2 x 5.0 x 1.4 cm\n\u003Cdl>\u003Cdt>Andradite var. Demantoid garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A thin plate of intergrown, glassy and gemmy, olive-green, demantoid crystals! The crystals, to 1.2 cm in length , are emplaced on a thin plate of (metamorphosed) metasomatized garnet matrix. Striking specimen for the sparkle and richness of the crystallization. All of these crystals are SO gemmy, and transparent, that you can look right through them to the matrix beneath. Superb, bright specimen, and a lot of demantoid for the price, I felt\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1508,{"id":578,"source_url":579,"license_code":495,"credit_html":580,"title":581,"description":582,"author":507,"original_width":583,"original_height":584},32941,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452392","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452392\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-dem29c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Antetezambato (Tetezambato), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAmbanja_District\" class=\"extiw\" title=\"en:Ambanja District\">Ambanja District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FDiana,_Madagascar\" class=\"extiw\" title=\"en:Diana, Madagascar\">Diana (Northern) Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntsiranana_Province\" class=\"extiw\" title=\"en:Antsiranana Province\">Antsiranana Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-210868.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 9.7 x 6.7 x 3.8 cm\n\u003Cdl>\u003Cdt>Andradite var. Demantoid garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Nestled on a thin matrix of massive garnet is a continuous, flowing cluster of flat-lying , extraordinarily glassy and gemmy, olive-green demantoid crystals, to 1.5 cm across. The two largest crystals also exhibit clear signs of hopper growrth, rare in members of the garnet family. This is a splendid example from this find with VERY rich coverage, and in superb condition. It displays both vertically and horizontally to equal effect. In person, it sends out flashes from the dozens of crystals and hundreds of faces present (many quite large, recall). This much topazolite on one piece, is an extreme rarity by previous standards for the species, as well\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1500,1255,{"id":586,"source_url":587,"license_code":495,"credit_html":588,"title":589,"description":590,"author":507,"original_width":591,"original_height":490},32943,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452421","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10452421\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-dem32y.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Antetezambato (Tetezambato), \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAmbanja_District\" class=\"extiw\" title=\"en:Ambanja District\">Ambanja District\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FDiana,_Madagascar\" class=\"extiw\" title=\"en:Diana, Madagascar\">Diana (Northern) Region\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAntsiranana_Province\" class=\"extiw\" title=\"en:Antsiranana Province\">Antsiranana Province\u003C\u002Fa>, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-210868.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 7.4 x 5.9 x 4.5 cm\n\u003Cdl>\u003Cdt>Andradite var. Demantoid garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>One of my personal favorites in the lot, this is a particularly elegant clustre on matrix, isolated, and with a stunning dominant crystal atop. This appealing demantoid specimen is composed of seven glassy and gemmy, richly green crystals to 1.5 cm across. The color and form of the crystals contrasts superbly with the underlying, white, massive garnet matrix (the matrix having been metamorphosed geologically from limestone to garnet, itself). Few specimens here, even those with more garnet, leap out to the eye a smuch as this, for the stark contrast and the top color. The main crystal here is so gemmy that you can really look right through it to the underlaying matrix, clear as day!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",823,{"id":593,"source_url":594,"license_code":495,"credit_html":595,"title":596,"description":597,"author":598,"original_width":599,"original_height":600},32944,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27631797","Moha112100, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27631797\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Garnet Andradite20.jpg","Garnet","Moha112100",1024,809,{"id":602,"source_url":603,"license_code":478,"credit_html":604,"title":605,"description":606,"author":607,"original_width":608,"original_height":609},66779,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82981796","Mai Seppel, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=82981796\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Estonian Museum of Natural History Specimen No 191073 photo (g28 g28-296 1 jpg).jpg","\"mineraalid\", \"melaniit (andradiit, granaat)\". More info \u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fgeocollections.info\u002Ffile\u002F92261\">about this file\u003C\u002Fa> and \u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fgeocollections.info\u002Fspecimen\u002F191073\">about this specimen\u003C\u002Fa> at \u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fgeocollections.info\u002F\">geocollections.info\u003C\u002Fa>","Mai Seppel",2067,2343,{"id":611,"source_url":612,"license_code":478,"credit_html":613,"title":614,"description":615,"author":607,"original_width":609,"original_height":616},66780,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=83014686","Mai Seppel, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=83014686\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Estonian Museum of Natural History Specimen No 202487 photo (g27 g27-853 1 jpg).jpg","\"andradiit\", \"melaniit\". More info \u003Ca rel=\"nofollow\" class=\"external text\" href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F65580\">about this file\u003C\u002Fa> and \u003Ca rel=\"nofollow\" class=\"external text\" href=\"https:\u002F\u002Fgeocollections.info\u002Fspecimen\u002F202487\">about this specimen\u003C\u002Fa> at \u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fgeocollections.info\u002F\">geocollections.info\u003C\u002Fa>",1378,{"id":618,"source_url":619,"license_code":478,"credit_html":620,"title":621,"description":622,"author":607,"original_width":609,"original_height":623},66781,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=83082653","Mai Seppel, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=83082653\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Estonian Museum of Natural History Specimen No 202489 photo (g27 g27-855 1 jpg).jpg","\"andradiit\", \"melaniit\". More info \u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fgeocollections.info\u002Ffile\u002F65552\">about this file\u003C\u002Fa> and \u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fgeocollections.info\u002Fspecimen\u002F202489\">about this specimen\u003C\u002Fa> at \u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fgeocollections.info\u002F\">geocollections.info\u003C\u002Fa>",1929,{"id":625,"source_url":626,"license_code":478,"credit_html":627,"title":628,"description":629,"author":630,"original_width":539,"original_height":631},1392,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=77043066","Bryan Barnes, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=77043066\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Nm Andradite Garnet Calcite.jpg","Andradite Garnet with Calcite on limestone matrix from Santa Fe County, New Mexico","Bryan Barnes",3999,{"id":633,"source_url":634,"license_code":495,"credit_html":635,"title":636,"description":637,"author":507,"original_width":638,"original_height":639},32932,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10150778","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10150778\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Braunite-Andradite-174175.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBraunite\" class=\"extiw\" title=\"en:Braunite\">Braunite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-55925.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.9 x 3.1 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>Splendent black braunite crystals up to 1cm in length are complimented by reddish-orange andradite garnet in this matrix specimen. Ex. Willy Israel Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",700,527,{"id":641,"source_url":642,"license_code":495,"credit_html":643,"title":644,"description":645,"author":507,"original_width":646,"original_height":647},32933,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174158","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174158\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Hausmannite-Andradite-289977.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHausmannite\" class=\"extiw\" title=\"en:Hausmannite\">Hausmannite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.5 x 2.2 x 1.8 cm.\u003C\u002Fdd>\n\u003Cdd>An outstanding thumbnail of intergrown and complex Hausmannite crystals. The complex and slightly stepped crystal faces create an attractive, almost 'snowflake' effect with the shimmering luster and overall shape. Incredibly aesthetic. Trace micro Andradite Garnets are also present. The crystals are about .7 cm on edge. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",431,500,{"id":649,"source_url":650,"license_code":495,"credit_html":651,"title":652,"description":653,"author":507,"original_width":509,"original_height":654},32934,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10430995","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10430995\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Epidote-Quartz-ib11a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEpidote\" class=\"extiw\" title=\"en:Epidote\">Epidote\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FQuartz\" class=\"extiw\" title=\"en:Quartz\">Quartz\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Garnet Hill, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalaveras_County,_California\" class=\"extiw\" title=\"en:Calaveras County, California\">Calaveras County\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalifornia\" class=\"extiw\" title=\"en:California\">California\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-12394.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 6.7 x 6.1 x 4 cm\n\u003Cdl>\u003Cdt>Andradite Garnet with Epidote and Quartz\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Extremely high lustre, good size, and fine aesthetics make this one of the very best such specimens for the locality, which is near to where the Calaveras axinites were found long ago. Garnet, however, is much rarer and this is thus a significant locality specimen. Ex. Irv Brown Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",524,{"id":656,"source_url":657,"license_code":495,"credit_html":658,"title":659,"description":660,"author":507,"original_width":661,"original_height":662},32935,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442946","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10442946\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Hematite-24edd31bb.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHematite\" class=\"extiw\" title=\"en:Hematite\">Hematite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 10 x 6.8 x 5.0 cm\n\u003Cdl>\u003Cdt>Hematite (Twinned crystals) with Andradite Garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>You could not ask for a more bright and metallic hematite than these crystals, with their mirror lustre and stunning contrast to the druses of andradite garnet around them! This is an exceptional, large specimen from finds in the 1980s, now long gone from the market. Even small examples of these mirror hematites with garnet go for over $1000, and this is a rare cabinet specimen of the same style. Comes with custom base.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",397,400,{"id":664,"source_url":665,"license_code":666,"credit_html":667,"title":668,"description":669,"author":670,"original_width":599,"original_height":671},11107,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27471440","CC BY 3.0","Carles Millan, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27471440\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Helvine, Andradite-437498.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHelvine\" class=\"extiw\" title=\"en:Helvine\">Helvine\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Huanggang Fe-Sn deposit (Huanggangliang Mine; Huanggang Mine), Hexigten Banner (Keshiketeng Co.), Ulanhad League (Chifeng Prefecture), Inner Mongolia Autonomous Region, China\u003C\u002Fdd>\n\u003Cdd>\u003Ci>Original description:\u003C\u002Fi> Two intergrown, extremely sharp, bright and slightly translucent dark brown color, tetrahedral crystals of helvite, with some small andradite crystals. A thumbnail. Overall size: 23 mm x 20 mm. Major tetrahedral edge: 23 mm. Weight: 7 g. Complete all around. No damage.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Carles Millan",941,{"id":673,"source_url":674,"license_code":495,"credit_html":675,"title":676,"description":677,"author":507,"original_width":509,"original_height":678},3020,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142370","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142370\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Bementite-Andradite-137564.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBementite\" class=\"extiw\" title=\"en:Bementite\">Bementite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-55925.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 5.2 x 3.9 x 2.2 cm.\u003C\u002Fdd>\n\u003Cdd>Extremely lustrous and sparkly, gemmy, deep wine-red andradite garnets richly covering the matrix, with accenting pale bementite. Specimens from the Manganese Fields of South Africa carry a special appeal for many collectors; this one came out of the collection of David Ellis.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",497,{"id":680,"source_url":681,"license_code":495,"credit_html":682,"title":683,"description":677,"author":507,"original_width":662,"original_height":684},3021,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142371","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10142371\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Bementite-Andradite-137565.jpg",370,{"id":686,"source_url":687,"license_code":495,"credit_html":688,"title":689,"description":690,"author":507,"original_width":691,"original_height":692},9690,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10450455","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10450455\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Gaudefroyite-k217a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 3.3 x 3.1 x 2.2 cm\n\u003Cdl>\u003Cdt>Gaudefroyite with Andradite Garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>SHARP specimen with really lustrous crystals of this rare species, especially a 2-cm-long doubly-terminated crystal right in the front-left. That one is partially covered with the andradite garnet that makes up the matrix as well\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",800,759,{"id":694,"source_url":695,"license_code":495,"credit_html":696,"title":697,"description":698,"author":507,"original_width":662,"original_height":699},9691,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10450612","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10450612\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Gaudefroyite-k289c.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 6.8 x 5.7 x 3.2 cm\n\u003Cdl>\u003Cdt>Gaudefroyite wtih Andradite garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Superb, exceptionally lustrous Gaudefroyite crystals to 1.5 cm festoon this matrix of bright sparkling garnet. This is a very rich specimen at, I think, a very cheap price as the pics do not do it justice for its significance and aesthetics!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",349,{"id":701,"source_url":702,"license_code":495,"credit_html":703,"title":704,"description":705,"author":507,"original_width":662,"original_height":706},10937,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418451","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10418451\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Hausmannite-ww14d.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHausmannite\" class=\"extiw\" title=\"en:Hausmannite\">Hausmannite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 2.6 x 2.5 x 2.1 cm\n\u003Cdl>\u003Cdt>Hausmannite on Andradite garnet\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>A fantastic 1.8 cm-on-edge crystal of Hausmannite sitting perfectly on a bed of red crystalline garnets. The Hausmannite has excellent sub-metallic luster, and is growing in its classic pseudo-octahedral form. There are even advanced late-stage pseudo-octahedrons forming on some of the corners. This is a superb and aesthetic specimen. Ex. Wendell E. Wilson Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",387,{"id":708,"source_url":709,"license_code":495,"credit_html":710,"title":711,"description":712,"author":507,"original_width":647,"original_height":713},10941,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10171218","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10171218\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Hausmannite-Andradite-272649.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHausmannite\" class=\"extiw\" title=\"en:Hausmannite\">Hausmannite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6.2 x 6.1 x 1.8 cm.\u003C\u002Fdd>\n\u003Cdd>This is a superb Hausmannites specimen. The tetragonal pyramids, up to nearly 1 cm on edge, are razor-sharp and highly lustrous. One large crystal has an old cleave, that seems to be partially re-healed and is grown over by later crystals, presenting an unusual broad face. One of the truly great things about the specimen is that pyramidal-looking crystals retain their individuality. They are not intergrown like you see on many Hausmannites. This is an exceptional specimen, not only for the quality of the Hausmannite crystals but the fine combination that you find it in. It is likely that the fine pink microcrystals are Andradite garnet, a rare and unique association. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",464,{"id":715,"source_url":716,"license_code":495,"credit_html":717,"title":718,"description":719,"author":507,"original_width":509,"original_height":720},11014,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10166880","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10166880\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Hedenbergite-249246.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHedenbergite\" class=\"extiw\" title=\"en:Hedenbergite\">Hedenbergite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Bor Pit (Boron Pit; Bor Quarry), Dal'negorsk B deposit, Dal'negorsk (Dalnegorsk; Tetyukhe; Tjetjuche; Tetjuche), Primorskiy Kray, Far-Eastern Region, Russia (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-4639.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6.9 x 3.9 x 3.6 cm.\u003C\u002Fdd>\n\u003Cdd>Sharp, gemmy and lustrous, olive-green andradite garnet crystals richly cover the mounded matrix on this excellent combination specimen from the Bor Pit at Dal’negorsk. The andradites have textbook dodecahedral form and reach 1.1 cm. One side of the specimen is festooned with tiny, prismatic hedenbergite crystals, making for a very fine combination specimen from this well-known locale. According to the label, the piece was collected in 2005.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",376,{"id":722,"source_url":723,"license_code":666,"credit_html":724,"title":725,"description":669,"author":670,"original_width":599,"original_height":726},11108,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27471445","Carles Millan, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27471445\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Helvine, Andradite-437500.jpg",1018,{"id":728,"source_url":729,"license_code":666,"credit_html":730,"title":731,"description":669,"author":670,"original_width":599,"original_height":732},11109,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27471447","Carles Millan, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27471447\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Helvine, Andradite-437499.jpg",1010,{"id":734,"source_url":735,"license_code":666,"credit_html":736,"title":737,"description":669,"author":670,"original_width":738,"original_height":599},11110,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27471448","Carles Millan, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=27471448\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Helvine, Andradite-437501.jpg",988,{"id":740,"source_url":741,"license_code":478,"credit_html":742,"title":743,"description":744,"author":745,"original_width":746,"original_height":747},12671,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=77806661","Joan Rosell, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=77806661\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","RM2040-roweita-johnbaumita-andradita.jpg",":Agregados en abanico de cristales de roweita, de color beige anaranjado, definidos, de buen tamaño y de calidad para la especie. La roweita es un borato de calcio y manganeso. Se acompañan de cristales prismáticos hexagonales de color blanco de johnbaumita de hasta 7 mm, excelentes también para la especie y muy poco habituales. La johnbaumita es un raro arseniato de calcio, el análogo arsenical del hidroxilapatito. En una matriz con verde andradita y cristales incoloros transparentes de pentahidroborita. Un ejemplar muy completo, con especies muy raras y bien cristalizadas.\n\u003Cdl>\u003Cdd>Medidas: 5.5 x 4.5 x 3.7 cm.\u003C\u002Fdd>\n\u003Cdd>Cristal principal: 1.5 cm (Roweite)\u002F 7 mm (Johnbaumite)\u003C\u002Fdd>\n\u003Cdd>Encontrado en 2017.\u003C\u002Fdd>\n\u003Cdd>Localidad: Shijiangshan mine, Linxi, Linxi Co., Ulanhad League, Inner Mongolia, China\u003C\u002Fdd>\u003C\u002Fdl>","Joan Rosell",872,1260,{"id":749,"source_url":750,"license_code":495,"credit_html":751,"title":752,"description":753,"author":507,"original_width":754,"original_height":755},23866,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174189","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174189\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Tephroite-Andradite-290004.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FTephroite\" class=\"extiw\" title=\"en:Tephroite\">Tephroite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.7 x 3.4 x 1.6 cm.\u003C\u002Fdd>\n\u003Cdd>A member of the Olivine group, this mineral is not a very common occurrence at Wessels. The brown crystals here are prismatic in habit and have very good to matte luster, and the Tephroite from this locality is considered by many to be best of species. The crystals range up to an amazing 1 cm in length, and may reach .3 cm across for the larger crystals. One end of the specimen is contacted, but that allows you to see just how gemmy and glassy the Tephroites are internally. An important, and quality, specimen of a very rare crystallized species. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",465,384,{"id":757,"source_url":758,"license_code":495,"credit_html":759,"title":760,"description":753,"author":507,"original_width":754,"original_height":761},23867,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174190","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174190\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Tephroite-Andradite-290005.jpg",320,{"id":763,"source_url":764,"license_code":495,"credit_html":765,"title":766,"description":753,"author":507,"original_width":754,"original_height":767},23868,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174191","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174191\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Tephroite-Andradite-290006.jpg",300,{"id":769,"source_url":770,"license_code":495,"credit_html":771,"title":772,"description":773,"author":507,"original_width":647,"original_height":774},36936,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10153054","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10153054\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Braunite-Andradite-180784.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBraunite\" class=\"extiw\" title=\"en:Braunite\">Braunite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-55925.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6.7 x 4.8 x 1.9 cm.\u003C\u002Fdd>\n\u003Cdd>A splendid and rich matrix specimen of lustrous chisel-point Braunite crystals that range up to 1 cm in length. Most of the crystals are beautifully striated and well-terminated. The bottom of the specimen is completely coated with Andradite Garnets, and there are many sprinkled on the Braunites, as well. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",375,{"id":776,"source_url":777,"license_code":495,"credit_html":778,"title":779,"description":780,"author":507,"original_width":647,"original_height":678},36942,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167542","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167542\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Braunite-Andradite-251452.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBraunite\" class=\"extiw\" title=\"en:Braunite\">Braunite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning Mines, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FKuruman,_Northern_Cape\" class=\"extiw\" title=\"en:Kuruman, Northern Cape\">Kuruman\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-55925.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 4.4 x 4.3 x 2 cm.\u003C\u002Fdd>\n\u003Cdd>An exemplary plate of superb, lustrous Braunite crystals, accented by euhedral red-orange Andradite Garnets. The Braunites are super-sharp, range up to .6 cm long, and have a mirror-like luster. The numerous Andradites are about 1-1.5 mm in size, and add a stunning contrast to the dark mettalic Braunites. Without a doubt, a rare combination that is intellectually interesting and good for the species. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":782,"source_url":783,"license_code":495,"credit_html":784,"title":785,"description":780,"author":507,"original_width":647,"original_height":786},36943,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167543","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167543\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Braunite-Andradite-251453.jpg",477,{"id":788,"source_url":789,"license_code":495,"credit_html":790,"title":791,"description":792,"author":507,"original_width":793,"original_height":509},56197,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139024","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139024\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Baryte-Andradite-118142.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaryte\" class=\"extiw\" title=\"en:Baryte\">Baryte\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Black Rock Mine, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBlack_Rock\" class=\"extiw\" title=\"en:Black Rock\">Black Rock\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3065.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 27 x 22 x 11 cm.\u003C\u002Fdd>\n\u003Cdd>Museum size and museum quality. Magnificent and rare large (read, HUGE) plate of the extremely rare manganese borate, Gaudefroyite. I have never seen such a large specimen with solid coverage as this. Quality crystals are rare, but this specimen is completely covered by lustrous tabular crystals that are black to deep rust in color. Among the thousand crystals, there are dozens upon dozens that range .5-1 cm in length, many in very attractive radial sprays. Incredible. Associated with the Gaudefroyite are a few sharp, zoned barytes and hundreds of lovely microcrystallized andradite garnets that occur in several groupings, adding both color and contrast to the piece. Amazing and aesthetic, this old piece is a classic.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",440,{"id":795,"source_url":796,"license_code":495,"credit_html":797,"title":798,"description":799,"author":507,"original_width":647,"original_height":800},56198,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139382","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139382\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Baryte-Andradite-118713.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaryte\" class=\"extiw\" title=\"en:Baryte\">Baryte\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Black Rock Mine, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBlack_Rock\" class=\"extiw\" title=\"en:Black Rock\">Black Rock\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3065.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9.6 x 8 x 2.2 cm.\u003C\u002Fdd>\n\u003Cdd>The Gaudefroyites are sharp, lustrous, and the needles reach up to about .8 cm in length. The Barytes, though partially cleaved, add brightness and contrast, while the ribbon of Andradites seal the deal.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",420,{"id":802,"source_url":803,"license_code":495,"credit_html":804,"title":805,"description":799,"author":507,"original_width":647,"original_height":806},56199,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139383","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10139383\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Baryte-Andradite-118714.jpg",367,{"id":808,"source_url":809,"license_code":495,"credit_html":810,"title":811,"description":812,"author":507,"original_width":691,"original_height":692},56200,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140208","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140208\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Andradite-120658.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>SHARP specimen with really lustrous crystals of this rare species, especially a 2-cm-long doubly-terminated crystal right in the front-left. That one is partially covered with the andradite garnet that makes up the matrix as well 3.3 x 3.1 x 2.2 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":814,"source_url":815,"license_code":495,"credit_html":816,"title":817,"description":818,"author":507,"original_width":490,"original_height":819},56201,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140312","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140312\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Andradite-Baryte-120808.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaryte\" class=\"extiw\" title=\"en:Baryte\">Baryte\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Black Rock Mine, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBlack_Rock\" class=\"extiw\" title=\"en:Black Rock\">Black Rock\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3065.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 8.6 x 5.7 x 3 cm.\u003C\u002Fdd>\n\u003Cdd>Choice example of the famous and highly desired Gaudefroyite\u002FAndradite\u002FBaryte combinations from Black Rock Mine. The Gaudefroyites are superbly lustrous, and the largest of the crystals is a full 1.2 cm long. The deep-red Andradites provide a beautiful contrast, as do the delicate Barytes, which are along the top and back.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",777,{"id":821,"source_url":822,"license_code":495,"credit_html":823,"title":824,"description":825,"author":507,"original_width":691,"original_height":826},56202,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140952","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10140952\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Rhodochrosite-Gaudefroyite-122388.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FRhodochrosite\" class=\"extiw\" title=\"en:Rhodochrosite\">Rhodochrosite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>We had only two such specimens in the whole collection of thousands of pieces, of these strange cast pseudomorphs of minutely crystallized, sparkling, andradite garnet that have replaced twinned rhodochrosite crystals. I had only ever seen 2 others , before. These look just like the famous pseudo-triangular crystals one saw from Mt St Hilaire in Quebec, in the 1980s. But, made of garnet! This one is shaped like a 3-dimensional map where there are folds up and down to illustrate heights. It is very aesthetic, and more impressive in person! It is complete all around and made up of garnet on the front display, with the backside completely lined with crystals of gaudefroyite and a few minor ettringites. There is a coating on the backside, but the gaude's sticking out to the sides are, luckily, clean and lustrous, and serve to nicely accent the flanks of the rhodo crystals. 5.5 x 5.3 x 1.7 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",732,{"id":828,"source_url":829,"license_code":495,"credit_html":830,"title":831,"description":832,"author":507,"original_width":509,"original_height":833},56203,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10148195","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10148195\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Andradite-163245.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 6.9 x 5.8 x 3.8 cm.\u003C\u002Fdd>\n\u003Cdd>An exceptional plate of gaudefroyite, a rare manganese mineral found at its best only in these Kalahari mines, perched on sparkling andradite garnet druse. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",501,{"id":835,"source_url":836,"license_code":495,"credit_html":837,"title":838,"description":839,"author":507,"original_width":840,"original_height":647},56206,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167599","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167599\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Andradite-Baryte-251508.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaryte\" class=\"extiw\" title=\"en:Baryte\">Baryte\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Black Rock Mine, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBlack_Rock\" class=\"extiw\" title=\"en:Black Rock\">Black Rock\u003C\u002Fa>, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3065.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 5.5 x 4.6 x 2.2 cm.\u003C\u002Fdd>\n\u003Cdd>A superb example of the Gaudefroyite\u002FAndradite\u002FBaryte combinations from Black Rock Mine. The Gaudefroyites are lustrous, and the largest of the crystals is a full 1 cm long. The brilliant red Andradites provide a beautiful contrast. The Barytes add a nice contrast, as well. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",434,{"id":842,"source_url":843,"license_code":495,"credit_html":844,"title":845,"description":839,"author":507,"original_width":846,"original_height":847},56207,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167600","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167600\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Andradite-Baryte-251509.jpg",378,499,{"id":849,"source_url":850,"license_code":495,"credit_html":851,"title":852,"description":853,"author":507,"original_width":854,"original_height":855},56208,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10168347","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10168347\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Gaudefroyite-Andradite-Baryte-256820.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGaudefroyite\" class=\"extiw\" title=\"en:Gaudefroyite\">Gaudefroyite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBaryte\" class=\"extiw\" title=\"en:Baryte\">Baryte\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 9.2 x 6.7 x 5.8 cm.\u003C\u002Fdd>\n\u003Cdd>Gaudefroyite is a very rare manganese borate compound. Lustrous, black, hexagonal gaudefroyite prisms to 8 mm are richly strewn on this fine example of the gaudefroyite\u002Fandradite\u002Fbaryte combination specimens. The gemmy, bright to dark cherry-red andradite garnets are a nice compliment, as are the snow-white barytes. The best gaudefroyites in the world come from the Kalahari Manganese Field and this is a highly representative and fine example of the combination species. Ex. Wes Parker Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",608,593,{"id":857,"source_url":858,"license_code":495,"credit_html":859,"title":860,"description":690,"author":507,"original_width":662,"original_height":861},56210,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10450456","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10450456\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Gaudefroyite-k217b.jpg",381,{"id":863,"source_url":864,"license_code":495,"credit_html":865,"title":866,"description":867,"author":507,"original_width":868,"original_height":509},58083,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10122101","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10122101\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Epidote-(Pb)-Andradite-24474.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEpidote\" class=\"extiw\" title=\"en:Epidote\">Epidote-(Pb)\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFranklin_Mine\" class=\"extiw\" title=\"en:Franklin Mine\">Franklin Mine\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFranklin\" class=\"extiw\" title=\"en:Franklin\">Franklin\u003C\u002Fa>, Franklin Mining District, Sussex County, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNew_Jersey\" class=\"extiw\" title=\"en:New Jersey\">New Jersey\u003C\u002Fa>, USA (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-8541.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A study specimen of these species, ex Harvard. Typical massive, brick-red hancockite and golden-brown andradite with minor black franklinite. A study specimen in the museum. ex. Dr. Gary Hansen dealer stock and not shown since early 1980s. 4 x 3.6 x 2 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",532,{"id":870,"source_url":871,"license_code":495,"credit_html":872,"title":873,"description":874,"author":507,"original_width":875,"original_height":876},58442,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10119961","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10119961\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Andradite-Hedenbergite-20546.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHedenbergite\" class=\"extiw\" title=\"en:Hedenbergite\">Hedenbergite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Mega Horio, Serifos Island (Seriphos), Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon), Kykládes Prefecture, Aegean Islands (Aiyaíon) Department, Greece (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-26823.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Beautiful and lustrous dark cherry-red andradite garnet crystals to 5 mm crown a pillar of lustrous hedenbergite blades from Serifos, Greece. 6.3 x 5.2 x 3.7 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",570,602,{"id":878,"source_url":879,"license_code":495,"credit_html":880,"title":881,"description":882,"author":507,"original_width":647,"original_height":883},66064,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167561","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167561\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Manganvesuvianite-Andradite-251473.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FManganvesuvianite\" class=\"extiw\" title=\"en:Manganvesuvianite\">Manganvesuvianite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAndradite\" class=\"extiw\" title=\"en:Andradite\">Andradite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Wessels Mine (Wessel's Mine), Hotazel, Kalahari manganese fields, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FNorthern_Cape\" class=\"extiw\" title=\"en:Northern Cape\">Northern Cape Province\u003C\u002Fa>, South Africa (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-3071.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 3.8 x 3.7 x 3.5 cm.\u003C\u002Fdd>\n\u003Cdd>A superb combination piece of highly lustrous Manganvesuvianite along with brilliant red Andradite Garnets. The surface is completely coated with mirror-like Manganvesuvianites, the largest of which is a sharp blocky crystal about 1 cm long and an incredible .4 cm across. The vivid red Andradites provide a beautiful contrast. Very Aesthetic and sparkling, but more than that a significant example of this vesuvianite species. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",426,{"id":885,"source_url":886,"license_code":495,"credit_html":887,"title":888,"description":882,"author":507,"original_width":889,"original_height":647},66065,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167562","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10167562\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Manganvesuvianite-Andradite-251474.jpg",443,{"id":891,"source_url":892,"license_code":478,"credit_html":893,"title":7,"description":11,"author":11,"original_width":490,"original_height":894},88727,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F65580","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F65580\" rel=\"noopener\">The Estonian Museum of Natural History\u003C\u002Fa> via Europeana",588,{"id":896,"source_url":897,"license_code":478,"credit_html":898,"title":7,"description":11,"author":11,"original_width":490,"original_height":591},88728,"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F65552","Photo: Unknown author — http:\u002F\u002Fcreativecommons.org\u002Flicenses\u002Fby-sa\u002F4.0\u002F, courtesy of \u003Ca href=\"https:\u002F\u002Fgeocollections.info\u002Ffile\u002F65552\" rel=\"noopener\">The Estonian Museum of Natural History\u003C\u002Fa> via Europeana",[900,906,911,916,921],{"id":901,"url":902,"label":903,"formula":904,"spacegroup":905,"year":436},547,"\u002Fcif\u002F547.cif","Quartieri 2006 · Ca3 Fe2 Si3 O12","Ca3 Fe2 Si3 O12","I a -3 d",{"id":907,"url":908,"label":909,"formula":910,"spacegroup":905,"year":436},548,"\u002Fcif\u002F548.cif","Quartieri 2006 · Ca3 (Fe1.8 Sc.2) Si3 O12","Ca3 (Fe1.8 Sc.2) Si3 O12",{"id":912,"url":913,"label":914,"formula":915,"spacegroup":905,"year":436},549,"\u002Fcif\u002F549.cif","Quartieri 2006 · Ca3 (Fe1.6 Sc.4) Si3 O12","Ca3 (Fe1.6 Sc.4) Si3 O12",{"id":917,"url":918,"label":919,"formula":920,"spacegroup":905,"year":436},550,"\u002Fcif\u002F550.cif","Quartieri 2006 · Ca3 (Fe1.44 Sc.56) Si3 O12","Ca3 (Fe1.44 Sc.56) Si3 O12",{"id":922,"url":923,"label":924,"formula":925,"spacegroup":905,"year":436},551,"\u002Fcif\u002F551.cif","Quartieri 2006 · Ca3 (Fe1.02 Sc.98) Si3 O12","Ca3 (Fe1.02 Sc.98) Si3 O12",[927,928,929,930,931,932,933,934,935,936,937,938,939,940],"Allochroit","Allochroite","Andradite Garnet","Aplom","Aplome","Calcium-Ferrigranat","Jellelite","Jellesite","Jelletite","Kalkeisengranat","Kalkeisentongranat","Polyadelphine","Polyadelphit","Rothoffite",[942,946,950,954,958,961,965,969,972,975,980,983,987,990,994,997,1001,1005,1009,1012,1015,1019,1023,1027,1031,1035,1039,1042,1046,1049,1052,1055,1058,1061,1064,1067,1070,1073],{"lang":943,"names":944},"ar",[945],"أندرديت",{"lang":947,"names":948},"ast",[949],"andradita",{"lang":951,"names":952},"az",[953],"andradit",{"lang":955,"names":956},"be",[957],"андрадыт",{"lang":959,"names":960},"be-tarask",[957],{"lang":962,"names":963},"be-x-old",[964],"Андрадыт",{"lang":966,"names":967},"bg",[968],"Андрадит",{"lang":970,"names":971},"ca",[949],{"lang":973,"names":974},"cs",[953],{"lang":976,"names":977},"de",[978,979,936],"Andradit","Calcium-Eisen-Granat",{"lang":981,"names":982},"de-ch",[978],{"lang":984,"names":985},"el",[986],"ανδραδίτης",{"lang":988,"names":989},"es",[949],{"lang":991,"names":992},"et",[993],"andradiit",{"lang":995,"names":996},"eu",[949],{"lang":998,"names":999},"fa",[1000],"آندرادیت",{"lang":1002,"names":1003},"fr",[1004],"andradite",{"lang":1006,"names":1007},"he",[1008],"אנדרדיט",{"lang":1010,"names":1011},"hu",[953],{"lang":1013,"names":1014},"it",[1004],{"lang":1016,"names":1017},"ja",[1018],"灰鉄柘榴石",{"lang":1020,"names":1021},"ka",[1022],"ანდრადიტი",{"lang":1024,"names":1025},"kk",[1026],"андрадит",{"lang":1028,"names":1029},"lt",[1030],"andraditas",{"lang":1032,"names":1033},"nb",[1034],"andraditt",{"lang":1036,"names":1037},"nl",[1038],"andradiet",{"lang":1040,"names":1041},"nn",[1034],{"lang":1043,"names":1044},"pl",[1045],"andradyt",{"lang":1047,"names":1048},"pt",[949],{"lang":1050,"names":1051},"pt-br",[949],{"lang":1053,"names":1054},"ru",[1026],{"lang":1056,"names":1057},"sl",[953],{"lang":1059,"names":1060},"sr",[1026],{"lang":1062,"names":1063},"sv",[953],{"lang":1065,"names":1066},"tg",[1026],{"lang":1068,"names":1069},"uk",[1026],{"lang":1071,"names":1072},"uz",[953],{"lang":1074,"names":1075},"zh",[1076],"钙铁榴石","Q280913",{"history":1079,"applications":1083},{"markdown":1080,"model_version":1081,"prompt_version":1082,"reviewed_at":11},"**Andradite** carries the name of a Brazilian statesman who never knew the mineral would be his namesake. He died in 1838; the species took his name thirty years later.\n\nThe story begins in 1800, in the iron country of southern Norway. A Brazilian mineralogist was examining a yellowish-grey mineral from a mine near Drammen[1]. His name was José Bonifácio de Andrada e Silva, born in Santos in 1763. He held the sample in the flame of a blowpipe — the brass tube mineralogists used to direct a candle flame onto a specimen. The substance changed colour as it cooled. Andrada named it *allochroite*, from the Greek *allos* — another — and *chroia* — colour[1].\n\n### Demantoid and the Russian gem trade\n\nWhile *allochroite* sat quietly in the literature, prospectors in the central Urals stumbled on the variety that would make the species famous. In 1851, vivid green crystals were recovered from an alluvial deposit about 110 kilometres north-northwest of Ekaterinburg, along the Bobrovka River[2]. The stones combined the brilliance of diamond with a saturated grass-green colour, and they were named **demantoid** — *diamond-like* — for the resemblance[2]. Russian demantoid carries a signature no later deposit has reproduced. Inside the stone, golden feathery fibres of *chrysotile* — a serpentine-group asbestos mineral — radiate from a tiny central crystal of chromite[2]. Chromite is the chromium-iron oxide that gives the variety its colour. Cutters call the inclusions *horsetails*.\n\n### Andradite gets its modern name\n\nThe reclassification came in 1868. The American mineralogist James Dwight Dana was then assembling the *System of Mineralogy* — the comprehensive treatise that would standardise much of the field. He regrouped the calcium-iron garnets under a single name and honoured Andrada's early work by calling the species *andradite*[1]. Andrada's *allochroite* became a subvariety of the new name[1].\n\nFrom the 1880s through the Russian Revolution, demantoid moved through the workshops of Peter Carl Fabergé and the jewellers of imperial Saint Petersburg[2]. The trade collapsed with the empire that supported it. Demantoid all but disappeared from the market until late in the 20th century, when two finds reopened the supply. A deposit at the Green Dragon mine in Namibia was located in 1996, and a second, larger find followed in Madagascar around 2009[2].\n\nTwo further varieties carry older names. **Melanite** — from the Greek *melas*, black — is the opaque, titanium-bearing form[3]. Limited substitution of titanium for iron darkens the crystal to coal-black. **Topazolite** is the yellow to greenish-yellow variety, rarer than demantoid and occasionally cut into faceted gems[4]. A historical varietal name, **colophonite**, was given to coarse, resin-coloured masses from Scandinavian skarns[4].","claude-opus-4-7","1.7.0",{"markdown":1084,"model_version":1081,"prompt_version":1082,"reviewed_at":11},"Andradite's working life today is almost entirely a gem story. The industrial garnet trade — sandblasting grit, waterjet powder, coated abrasive paper — runs on **almandine**, the harder, iron-rich garnet of the same family[1]. Andradite has no significant share of that market. Its place is on a jeweller's bench and in a collector's cabinet.\n\nThe defining gem variety is **demantoid** — the chromium-bearing, vivid-green form[2]. Its name points to its diamond-like *dispersion*: the optical property that makes a faceted stone throw rainbow flashes of light. Demantoid is among the most prized of all garnet varieties[2]. Russian material is sought specifically for its *horsetail* inclusions of chrysotile fibres[2]. Here a flaw is part of the value — the horsetails identify the Ural origin. Younger sources in Namibia and Madagascar supply most of the contemporary trade. Smaller deposits in Iran's Kerman and West Azerbaijan provinces add to the market[2].\n\n**Topazolite**, the yellow to greenish-yellow variety, is occasionally cut into faceted gems but is rarer than demantoid and rarely seen at the counter[3]. **Melanite**, the opaque black titanium-bearing variety, is cut and polished mainly as a collector and ornamental stone rather than as a mainstream jewel[4].\n\nBeyond the gem trade, well-crystallised specimens are sought by museums and private collectors as representative material of the calcium-iron garnet end-member. Demand concentrates on the classic localities: Drammen, the Bobrovka placers of the Urals, and the Green Dragon mine in Namibia."]