[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:1737":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":11,"weighting":12,"nolocadd":13,"blacklisted":13,"mindat_formula":14,"mindat_formula_note":11,"ima_formula":15,"elements":16,"sigelements":23,"key_elements":24,"impurities":25,"cim":26,"ima_status":27,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":30,"discovery_year":31,"strunz10ed1":32,"strunz10ed2":33,"strunz10ed3":34,"strunz10ed4":35,"dana8ed1":36,"dana8ed2":37,"dana8ed3":37,"dana8ed4":37,"csystem":38,"cclass":39,"spacegroup":11,"spacegroupset":40,"a":41,"b":42,"c":43,"alpha":40,"beta":40,"gamma":40,"aerror":44,"berror":44,"cerror":44,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":45,"csmetamict":13,"commentcrystal":46,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":47,"tlform":48,"hmin":49,"hmax":49,"hardtype":11,"vhnmin":40,"vhnmax":40,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":50,"dmeas2":51,"dcalc":52,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":53,"commentluster":54,"diapheny":55,"streak":11,"colour":56,"commentcolor":57,"colors":58,"streak_colors":11,"luminescence":11,"uv":11,"cleavage":61,"cleavagetype":62,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":63,"opticalsign":64,"opticalalpha":65,"opticalalpha2":66,"opticalalphaerror":11,"opticalbeta":67,"opticalbeta2":68,"opticalbetaerror":11,"opticalgamma":69,"opticalgamma2":70,"opticalgammaerror":11,"opticalomega":40,"opticalomega2":40,"opticalomegaerror":11,"opticalepsilon":40,"opticalepsilon2":40,"opticalepsilonerror":11,"opticaln":40,"opticaln2":40,"opticalnerror":11,"optical2vcalc":71,"optical2vcalc2":40,"optical2vcalcerror":11,"optical2vmeasured":72,"optical2vmeasured2":71,"optical2vmeasurederror":11,"rimin":73,"rimax":74,"opticaldispersion":75,"opticalpleochroism":76,"opticalpleochorismdesc":77,"opticalbirefringence":11,"opticalcomments":78,"opticalcolour":11,"opticalinternal":11,"opticaltropic":11,"opticalanisotropism":11,"opticalbireflectance":11,"opticalextinction":11,"opticalr":11,"specdispm":11,"ir":11,"electrical":11,"magnetism":11,"thermalbehaviour":11,"other":11,"industrial":11,"occurrence":79,"otheroccurrence":80,"type_specimen_store":81,"description_short":82,"aboutname":83,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":84,"reviewed_at":11,"variety_of":11,"varieties":85,"group_members":86,"associates":87,"confused_with":166,"type_localities":167,"occurrence_total":174,"citations":175,"images":252,"structures":310,"synonyms":337,"language_names":339,"wikidata_qid":396,"texts":397},1737,"1:1:1737:0","3a88251c-8344-496f-a90d-f7c6a1454dd7","Grandidierite","Gdd",0,"mineral",null,878,false,"(Mg,Fe\u003Csup>2+\u003C\u002Fsup>)(Al,Fe\u003Csup>3+\u003C\u002Fsup>)\u003Csub>3\u003C\u002Fsub>(SiO\u003Csub>4\u003C\u002Fsub>)(BO\u003Csub>3\u003C\u002Fsub>)O\u003Csub>2\u003C\u002Fsub>","MgAl\u003Csub>3\u003C\u002Fsub>O\u003Csub>2\u003C\u002Fsub>(BO\u003Csub>3\u003C\u002Fsub>)(SiO\u003Csub>4\u003C\u002Fsub>)",[17,18,19,20,21,22],"Al","Fe","Mg","Si","B","O",[17,19,20,21,22],[21],",Ti,Mn,Na,K,,","17.5.49",[28,29],"APPROVED","GRANDFATHERED",1902,"1902","9","A","J","05","54","1","Orthorhombic",8,"0","10.335","10.978","5.760",2,4,"Pbnm space group","Anhedral elongated individuals to 8cm; usually strongly corroded","Bluish green masses up to several centimeters across, in quartz",7.5,"2.98","2.99","3.00","Vitreous,Pearly","Somewhat pearly on cleavage","Transparent,Translucent","Bluish green, greenish blue","Increasingly greener with greater Fe content; colourless to blue or green in thin section",[59,60],"blue","green","more perfect {100}, and {010}","Perfect","Biaxial","-","1.590","1.602","1.618","1.636","1.623","1.639","32","24",1.59,1.639,"very strong (r \u003C v)","Visible","X= beep blue to blue green\r\nY= colorless\r\nZ= light greenish blue to deep green","Orientation: X=a, Y=b, Z=c; absorption: Z>X>Y","Pegmatite cross-cuts migmatitic high-grade granulite-facies metapelite gneisses and leptynites","Accessory mineral from aluminous boron rich rocks that underwent thermal and regionally metamorposed (low-pressure conditions); found in aplites, pegmatites; gneisses; xenoliths","Harvard University, Cambridge, Massachusetts, USA, registration no. 86382","The Mg analogue of Ominelite. Chemically close to kornerupine.","Named by A. Lacroix in 1902 in honor of Alfred Grandidier (20 December 1836, Paris, France - 13 September 1912, Paris, France), French explorer and naturalist.  He visited Madagascar three times between 1865-1870, crossing the island three times.  With others, he wrote \u003Cem>L'Histoire physique, naturelle et politique de Madagascar\u003C\u002Fem>, a work spanning 40 volumes.","2026-03-12 16:48:56",[],[],[88,97,105,114,123,130,137,145,151,158],{"id":89,"name":90,"entrytype":9,"csystem":38,"ima_formula":91,"mindat_formula":92,"hmin":93,"hmax":49,"dmeas":94,"dcalc":95,"primary_image_id":96},217,"Andalusite","Al\u003Csub>2\u003C\u002Fsub>SiO\u003Csub>5\u003C\u002Fsub>","Al\u003Csub>2\u003C\u002Fsub>(SiO\u003Csub>4\u003C\u002Fsub>)O",6.5,"3.13","3.149",29089,{"id":98,"name":99,"entrytype":9,"csystem":38,"ima_formula":100,"mindat_formula":100,"hmin":101,"hmax":49,"dmeas":102,"dcalc":103,"primary_image_id":104},1128,"Cordierite","Mg\u003Csub>2\u003C\u002Fsub>Al\u003Csub>4\u003C\u002Fsub>Si\u003Csub>5\u003C\u002Fsub>O\u003Csub>18\u003C\u002Fsub>",7,"2.6","2.505",6260,{"id":106,"name":107,"entrytype":9,"csystem":108,"ima_formula":109,"mindat_formula":109,"hmin":110,"hmax":110,"dmeas":111,"dcalc":112,"primary_image_id":113},1136,"Corundum","Trigonal","Al\u003Csub>2\u003C\u002Fsub>O\u003Csub>3\u003C\u002Fsub>",9,"3.98","3.997",6346,{"id":115,"name":116,"entrytype":9,"csystem":38,"ima_formula":117,"mindat_formula":118,"hmin":119,"hmax":101,"dmeas":120,"dcalc":121,"primary_image_id":122},2254,"Kornerupine","(Mg,Fe\u003Csup>2+\u003C\u002Fsup>,Al,◻)\u003Csub>10\u003C\u002Fsub>(Si,Al,B)\u003Csub>5\u003C\u002Fsub>O\u003Csub>21\u003C\u002Fsub>(OH,F)\u003Csub>2\u003C\u002Fsub>","Mg\u003Csub>3\u003C\u002Fsub>Al\u003Csub>6\u003C\u002Fsub>(Si,Al,B)\u003Csub>5\u003C\u002Fsub>O\u003Csub>21\u003C\u002Fsub>(OH)",6,"3.29","3.288",13557,{"id":124,"name":125,"entrytype":9,"csystem":108,"ima_formula":126,"mindat_formula":126,"hmin":101,"hmax":101,"dmeas":127,"dcalc":128,"primary_image_id":129},3337,"Quartz","SiO\u003Csub>2\u003C\u002Fsub>","2.65","2.66",30579,{"id":131,"name":132,"entrytype":9,"csystem":133,"ima_formula":134,"mindat_formula":134,"hmin":49,"hmax":49,"dmeas":135,"dcalc":40,"primary_image_id":136},3531,"Sapphirine","Monoclinic","Mg\u003Csub>4\u003C\u002Fsub>(Mg\u003Csub>3\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>)O\u003Csub>4\u003C\u002Fsub>[Si\u003Csub>3\u003C\u002Fsub>Al\u003Csub>9\u003C\u002Fsub>O\u003Csub>36\u003C\u002Fsub>]","3.4",21566,{"id":138,"name":139,"entrytype":9,"csystem":140,"ima_formula":141,"mindat_formula":141,"hmin":93,"hmax":101,"dmeas":142,"dcalc":143,"primary_image_id":144},3623,"Serendibite","Triclinic","Ca\u003Csub>4\u003C\u002Fsub>[Mg\u003Csub>6\u003C\u002Fsub>Al\u003Csub>6\u003C\u002Fsub>]O\u003Csub>4\u003C\u002Fsub>[Si\u003Csub>6\u003C\u002Fsub>B\u003Csub>3\u003C\u002Fsub>Al\u003Csub>3\u003C\u002Fsub>O\u003Csub>36\u003C\u002Fsub>]","3.42","3.47",22121,{"id":146,"name":147,"entrytype":9,"csystem":38,"ima_formula":91,"mindat_formula":92,"hmin":93,"hmax":49,"dmeas":148,"dcalc":149,"primary_image_id":150},3662,"Sillimanite","3.23","3.24",30699,{"id":152,"name":153,"entrytype":9,"csystem":38,"ima_formula":154,"mindat_formula":154,"hmin":93,"hmax":101,"dmeas":155,"dcalc":156,"primary_image_id":157},3672,"Sinhalite","MgAl(BO\u003Csub>4\u003C\u002Fsub>)","3.475","3.45",22430,{"id":159,"name":160,"entrytype":9,"csystem":161,"ima_formula":162,"mindat_formula":162,"hmin":49,"hmax":39,"dmeas":163,"dcalc":164,"primary_image_id":165},3729,"Spinel","Isometric","MgAl\u003Csub>2\u003C\u002Fsub>O\u003Csub>4\u003C\u002Fsub>","3.6","3.578",80269,[],[168],{"id":169,"txt":170,"latitude":171,"longitude":172,"country":173},5803,"Cap Andrahomana, Andranobory, Taolagnaro District, Anosy, Madagascar",-25.1994266,46.6324345,"Madagascar",31,[176,179,183,188,193,197,202,207,212,216,221,225,230,234,239,244,248],{"id":177,"year":30,"html":178,"doi":11},17164480,"Lacroix, Alfred (1902) Note préliminaire sur une nouvelle espèce minérale. \u003Ci>Bulletin de la Société française de Minéralogie\u003C\u002Fi>,  25 (4-5) 85-86 \u003Ca target='_blank' href='file:\u002F\u002F\u002FC:\u002FUsers\u002FKnut%20Edvard\u002FDownloads\u002Fbulmi_0366-3248_1902_num_25_4_2632.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":180,"year":181,"html":182,"doi":11},16150837,1922,"Lacroix, Alfred (1922) \u003Ci> Minéralogie de Madagascar, Tome I. Géologie-Minéralogie descriptive\u003C\u002Fi>. Augustin Challamel. 624 pp. \u003Ca target='_blank' href='https:\u002F\u002Fia601308.us.archive.org\u002F18\u002Fitems\u002FMineralogieDeMadagascarTome1\u002Flacroix-a-mineralogie-vol1-1922-RTL014358.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":184,"year":185,"html":186,"doi":187},6221456,1965,"McKie, Duncan (1965) The magnesium aluminium borosilicates: kornerupine and grandidierite. \u003Ci>Mineralogical Magazine and Journal of the Mineralogical Society\u003C\u002Fi>,  34 (268). 346-357 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1965.034.268.29'>doi:10.1180\u002Fminmag.1965.034.268.29\u003C\u002Fa>","10.1180\u002Fminmag.1965.034.268.29",{"id":189,"year":190,"html":191,"doi":192},219203,1968,"Stephenson, D. A., Moore, P. B. (1968) The crystal structure of grandidierite, (Mg,Fe)Al3SiBO9. \u003Ci>Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry\u003C\u002Fi>,  24 (11) 1518-1522 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs0567740868004577'>doi:10.1107\u002Fs0567740868004577\u003C\u002Fa>","10.1107\u002Fs0567740868004577",{"id":194,"year":195,"html":196,"doi":11},16110772,1975,"Zav'yalova, I.V., Vartanova, N.S., Arkhipenko, D.K., Grigor'yeva, T.N., and Solotchina, E.P. (1975) A find of grandidierite in western Transbaikaliya. Dokl. Akad. Nauk. SSSR 213, 140-142.",{"id":198,"year":199,"html":200,"doi":201},3143,1980,"Haslam, H.W. (1980) Grandidierite from a metamorphic aureole near Mchinji, Malawi. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  43 (330) 822-823 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1980.043.330.21'>doi:10.1180\u002Fminmag.1980.043.330.21\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_43\u002F43-330-822.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1980.043.330.21",{"id":203,"year":204,"html":205,"doi":206},3539,1983,"Grew, Edward S. (1983) A grandidierite-sapphirine association from India. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  47 (344) 401-403 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1983.047.344.20'>doi:10.1180\u002Fminmag.1983.047.344.20\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_47\u002F47-344-401.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1983.047.344.20",{"id":208,"year":209,"html":210,"doi":211},1596,1990,"Nicollet, Christian (1990) Occurrences of grandidierite, serendibite and tourmaline near Ihosy, southern Madagascar. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  54 (374) 131-133 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1990.054.374.16'>doi:10.1180\u002Fminmag.1990.054.374.16\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_54\u002F54-374-131.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1990.054.374.16",{"id":213,"year":214,"html":215,"doi":11},529022,1991,"Niven, Margaret L., Waters, David J., Moore, John M. (1991) The crystal structure of werdingite, (Mg,Fe)2Al12(Al,Fe)2Si4(B,Al)4O37 and its relationship to sillimanite, mullite, and grandidierite. \u003Ci>American Mineralogist\u003C\u002Fi>,  76 (1-2) 246-256 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM76\u002FAM76_246.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":217,"year":218,"html":219,"doi":220},2648,1995,"Carson, C. J., Hand, M., Dirks, P. H. G. M. (1995) Stable coexistence of grandidierite and kornerupine during medium pressure granulite facies metamorphism. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  59 (395) 327-339 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1995.059.395.16'>doi:10.1180\u002Fminmag.1995.059.395.16\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_59\u002F59-395-327.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1995.059.395.16",{"id":222,"year":223,"html":224,"doi":11},15418311,1996,"Grew, Edward S.; Anovitz, Lawrence M. - \u003Ci>Eds.\u003C\u002Fi> (1996) Boron - Mineralogy, Petrology and Geochemistry. \u003Ci>Reviews in Mineralogy\u003C\u002Fi> Vol. 33. Mineralogical Society of America p.862",{"id":226,"year":227,"html":228,"doi":229},393611,1997,"MacKenzie, Kenneth J. D., Meinhold, Richard H. (1997) MAS NMR study of pentacoordinated magnesium in grandidierite. \u003Ci>American Mineralogist\u003C\u002Fi>,  82 (5) 479-482 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam-1997-5-606'>doi:10.2138\u002Fam-1997-5-606\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002Fam\u002Fvol82\u002FAM82_479.pdf' class='refpdflink'>\u003C\u002Fa>","10.2138\u002Fam-1997-5-606",{"id":231,"year":232,"html":233,"doi":11},16964642,2001,"(2001) Grandidierite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fgrandidierite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":235,"year":236,"html":237,"doi":238},395777,2007,"Dzikowski, T. J., Groat, L. A., Grew, E. S. (2007) The geometric effects of VFe2+ for VMg substitution on the crystal structures of the grandidierite-ominelite series. \u003Ci>American Mineralogist\u003C\u002Fi>,  92 (5) 863-872 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2007.2275'>doi:10.2138\u002Fam.2007.2275\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002Fam\u002Fvol92\u002FAM92_863.pdf' class='refpdflink'>\u003C\u002Fa>","10.2138\u002Fam.2007.2275",{"id":240,"year":241,"html":242,"doi":243},396391,2010,"Cempirek, J., Novak, M., Dolnicek, Z., Kotkova, J., Skoda, R. (2010) Crystal chemistry and origin of grandidierite, ominelite, boralsilite, and werdingite from the Bory Granulite Massif, Czech Republic. \u003Ci>American Mineralogist\u003C\u002Fi>,  95 (10) 1533-1547 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2010.3480'>doi:10.2138\u002Fam.2010.3480\u003C\u002Fa>","10.2138\u002Fam.2010.3480",{"id":245,"year":246,"html":247,"doi":11},16100989,2016,"Anthony, John W., Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. - \u003Ci>Eds.\u003C\u002Fi> (2016) Handbook of Mineralogy. \u003Ca target='_blank' rel='nofollow' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002F'>https:\u002F\u002Fwww.handbookofmineralogy.org\u002F\u003C\u002Fa>",{"id":249,"year":250,"html":251,"doi":11},15897736,2023,"Larsen, Knut Edvard (2023) Minerals first described from Madagascar. \u003Ci>Norsk Mineralsymposium 2023\u003C\u002Fi>, 89-122",[253,263,269,276,282,291,301],{"id":254,"source_url":255,"license_code":256,"credit_html":257,"title":258,"description":259,"author":260,"original_width":261,"original_height":262},10338,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10149538","CC BY-SA 3.0","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10149538\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grandidierite-169886.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGrandidierite\" class=\"extiw\" title=\"en:Grandidierite\">Grandidierite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Cap Andrahomana, Ranopiso Commune, Taolañaro (Fort Dauphin) District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAnosy\" class=\"extiw\" title=\"en:Anosy\">Anosy (Fort Dauphin) Region\u003C\u002Fa>, Tuléar (Toliara) Province, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5803.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 2.5 x 2.0 x 1.6 cm.\u003C\u002Fdd>\n\u003Cdd>Sharply crystallized examples of this species are very rare. This is the type locality, from which specimens were recovered around 1900 and identified in 1902. This is a rare magnesium, aluminum oxide, borate silicate and here occurs in lustrous, slightly translucent, sky blue crystals, to 1.5 cm across. This ENTIRE CLUSTER is composed of sharp tabular crystals, although with some contacts at the edges.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",800,653,{"id":264,"source_url":265,"license_code":256,"credit_html":266,"title":267,"description":268,"author":260,"original_width":261,"original_height":262},10339,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10457780","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10457780\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grandidierite-rare08-09a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FGrandidierite\" class=\"extiw\" title=\"en:Grandidierite\">Grandidierite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Cap Andrahomana, Ranopiso Commune, Taolañaro (Fort Dauphin) District, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FAnosy\" class=\"extiw\" title=\"en:Anosy\">Anosy (Fort Dauphin) Region\u003C\u002Fa>, Tuléar (Toliara) Province, Madagascar (\u003Ca rel=\"nofollow\" class=\"external text\" href=\"http:\u002F\u002Fwww.mindat.org\u002Floc-5803.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: thumbnail, 2.5 x 2.0 x 1.6 cm\n\u003Cdl>\u003Cdt>Grandidierite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Sharply crystallized examples of this species are very rare, and this is the first I personally have handled. This is the type locality, from which specimens were recovered around 1900 and identified in 1902. This is a rare magnesium, aluminum oxide, borate silicate and here occurs in lustrous, slightly translucent, sky blue crystals, to 1.5 cm across. This ENTIRE CLUSTER is composed of sharp tabular crystals, although with some contacts at the edges.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":270,"source_url":271,"license_code":256,"credit_html":272,"title":273,"description":268,"author":260,"original_width":274,"original_height":275},10340,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10457781","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10457781\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grandidierite-rare08-09b.jpg",271,400,{"id":277,"source_url":278,"license_code":256,"credit_html":279,"title":280,"description":268,"author":260,"original_width":281,"original_height":261},10341,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10457784","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10457784\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grandidierite-rare08-09c.jpg",757,{"id":283,"source_url":284,"license_code":256,"credit_html":285,"title":286,"description":287,"author":288,"original_width":289,"original_height":290},10342,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=37683978","DonGuennie (G-Empire The World Of Gems), via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=37683978\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grandidierit-G-EmpireTheWorldOfGems.jpg","Facettierter \u003Ca href=\"https:\u002F\u002Fde.wikipedia.org\u002Fwiki\u002FGrandidierit\" class=\"extiw\" title=\"de:Grandidierit\">Grandidierit\u003C\u002Fa>, 2.43ct, aus Madagaskar","DonGuennie (G-Empire The World Of Gems)",650,450,{"id":292,"source_url":293,"license_code":294,"credit_html":295,"title":296,"description":297,"author":298,"original_width":299,"original_height":300},10344,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=56590014","CC BY-SA 4.0","American-thai, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=56590014\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Grandidierite.jpg","Faceted Natural Grandidierite","American-thai",500,453,{"id":302,"source_url":303,"license_code":294,"credit_html":304,"title":305,"description":306,"author":307,"original_width":308,"original_height":309},10345,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=80019023","Gmerritt, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=80019023\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","World's Largest Cut Grandidierite 429.60 Carats.jpg","World's Largest Cut Grandidierite \n429.87 Carats Grandidierite Owned By a Filipino collector Benedicto G. Membrere V","Gmerritt",5312,2988,[311,317,322,327,332],{"id":312,"url":313,"label":314,"formula":315,"spacegroup":316,"year":236},5687,"\u002Fcif\u002F5687.cif","Dzikowski 2007 · (Mg.976 Fe.024) Al3 B Si O9","(Mg.976 Fe.024) Al3 B Si O9","P b n m",{"id":318,"url":319,"label":320,"formula":321,"spacegroup":316,"year":236},5688,"\u002Fcif\u002F5688.cif","Dzikowski 2007 · (Mg.874 Fe.126) Al3 B Si O9","(Mg.874 Fe.126) Al3 B Si O9",{"id":323,"url":324,"label":325,"formula":326,"spacegroup":316,"year":236},5689,"\u002Fcif\u002F5689.cif","Dzikowski 2007 · (Mg.818 Fe.182) Al3 B Si O9","(Mg.818 Fe.182) Al3 B Si O9",{"id":328,"url":329,"label":330,"formula":331,"spacegroup":316,"year":236},5690,"\u002Fcif\u002F5690.cif","Dzikowski 2007 · (Mg.726 Fe.274) Al3 B Si O9","(Mg.726 Fe.274) Al3 B Si O9",{"id":333,"url":334,"label":335,"formula":336,"spacegroup":316,"year":236},5691,"\u002Fcif\u002F5691.cif","Dzikowski 2007 · (Mg.666 Fe.334) Al3 B Si O9","(Mg.666 Fe.334) Al3 B Si O9",[338],"Grandidieriet",[340,344,348,351,355,359,362,366,370,374,377,381,385,388,392],{"lang":341,"names":342},"ca",[343],"grandidierita",{"lang":345,"names":346},"cs",[347],"Grandidierit",{"lang":349,"names":350},"de",[347],{"lang":352,"names":353},"eu",[354],"Grandidierita",{"lang":356,"names":357},"fr",[358],"grandidiérite",{"lang":360,"names":361},"it",[7],{"lang":363,"names":364},"ja",[365],"グランディディエライト",{"lang":367,"names":368},"ka",[369],"გრანდიდიერიტი",{"lang":371,"names":372},"nb",[373],"grandidieritt",{"lang":375,"names":376},"nn",[373],{"lang":378,"names":379},"pl",[380],"Grandidieryt",{"lang":382,"names":383},"pt",[384],"grandidierite",{"lang":386,"names":387},"pt-br",[7],{"lang":389,"names":390},"uk",[391],"Грандидьєрит",{"lang":393,"names":394},"zh",[395],"硅硼镁铝矿","Q3775686",{"history":11,"applications":11}]