[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"minerals:one:1414":3},{"id":4,"longid":5,"guid":6,"name":7,"shortcode_ima":8,"entrytype":9,"entrytype_text":10,"varietyof":11,"synid":11,"polytypeof":11,"groupid":12,"weighting":13,"nolocadd":14,"blacklisted":14,"mindat_formula":15,"mindat_formula_note":11,"ima_formula":16,"elements":17,"sigelements":23,"key_elements":11,"impurities":11,"cim":24,"ima_status":25,"ima_notes":11,"ima_history":11,"approval_year":11,"publication_year":11,"discovery_year":28,"strunz10ed1":29,"strunz10ed2":30,"strunz10ed3":31,"strunz10ed4":32,"dana8ed1":33,"dana8ed2":34,"dana8ed3":35,"dana8ed4":36,"csystem":37,"cclass":38,"spacegroup":39,"spacegroupset":40,"a":41,"b":40,"c":42,"alpha":40,"beta":40,"gamma":40,"aerror":11,"berror":11,"cerror":11,"alphaerror":11,"betaerror":11,"gammaerror":11,"va3":11,"z":43,"csmetamict":14,"commentcrystal":11,"twinning":11,"tranglide":11,"parting":11,"epitaxidescription":11,"morphology":44,"tlform":11,"hmin":43,"hmax":45,"hardtype":11,"vhnmin":40,"vhnmax":40,"vhnerror":11,"vhng":11,"vhns":11,"commenthard":11,"dmeas":46,"dmeas2":46,"dcalc":47,"dmeaserror":11,"dcalcerror":11,"commentdense":11,"lustre":11,"lustretype":11,"commentluster":11,"diapheny":48,"streak":11,"colour":49,"commentcolor":50,"colors":51,"streak_colors":11,"luminescence":11,"uv":11,"cleavage":54,"cleavagetype":55,"fracturetype":11,"tenacity":11,"commentbreak":11,"opticaltype":56,"opticalsign":57,"opticalalpha":40,"opticalalpha2":40,"opticalalphaerror":11,"opticalbeta":40,"opticalbeta2":40,"opticalbetaerror":11,"opticalgamma":40,"opticalgamma2":40,"opticalgammaerror":11,"opticalomega":58,"opticalomega2":40,"opticalomegaerror":11,"opticalepsilon":59,"opticalepsilon2":40,"opticalepsilonerror":11,"opticaln":40,"opticaln2":40,"opticalnerror":11,"optical2vcalc":40,"optical2vcalc2":40,"optical2vcalcerror":11,"optical2vmeasured":40,"optical2vmeasured2":40,"optical2vmeasurederror":11,"rimin":60,"rimax":61,"opticaldispersion":11,"opticalpleochroism":11,"opticalpleochorismdesc":11,"opticalbirefringence":11,"opticalcomments":62,"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":63,"industrial":11,"occurrence":64,"otheroccurrence":11,"type_specimen_store":65,"description_short":66,"aboutname":67,"rock_parent":11,"rock_parent2":11,"rock_root":9,"rock_bgs_code":11,"meteoritical_code":11,"updttime":68,"reviewed_at":11,"variety_of":11,"varieties":69,"group_members":70,"associates":173,"confused_with":174,"type_localities":175,"occurrence_total":187,"citations":188,"images":362,"structures":682,"synonyms":710,"language_names":713,"wikidata_qid":805,"texts":806},1414,"1:1:1414:0","cf8eca52-1cdc-4b64-a446-8934a5d00bb0","Ettringite","Ett",0,"mineral",null,29289,6333,false,"Ca\u003Csub>6\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub>·26H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>6\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub> · 27H\u003Csub>2\u003C\u002Fsub>O",[18,19,20,21,22],"Al","Ca","O","S","H",[18,19,20,21,22],"25.4.13",[26,27],"APPROVED","GRANDFATHERED","1874","7","D","G","15","31","10","2","1","Trigonal",11,81,"0","11.23","21.44",2,"Crystals small and prismatic [0001], commonly without terminal faces.",2.5,"1.77","1.76","Transparent","Colourless; colourless in transmitted light; yellow","Turns white upon partial dehydration.",[52,53],"colorless","yellow","On \u003Cmi>{10_10}\u003C\u002Fmi>, perfect.","Perfect","Uniaxial","-","1.491","1.47",1.47,1.491,"Becomes uniaxial positive on dehydration.","Readily soluble in dilute acids. Partially decomposed by water, rendering an alkaline solution.","In cavities of metamorphosed limestone inclusions in a leucite-nepheline-tephrite rock.","No designated type material.","Ettringite Group.\r\n\r\nAlthough it is generally assumed that a solid solution series between ettringite and thaumasite exists, both species have different space groups and a possible discontinuity was identified, characterised by a gap in the a-dimension...","After the type locality at Ettringen, Rhineland-Palatinate, Germany.","2025-08-11 12:14:20",[],[71,79,86,92,99,106,113,119,126,134,144,150,158,165],{"id":72,"name":73,"entrytype":9,"csystem":37,"ima_formula":74,"mindat_formula":75,"hmin":43,"hmax":43,"dmeas":76,"dcalc":77,"primary_image_id":78},627,"Bentorite","Ca\u003Csub>6\u003C\u002Fsub>Cr\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub> · 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","1.92","1.93",13596,{"id":135,"name":136,"entrytype":9,"csystem":89,"ima_formula":137,"mindat_formula":138,"hmin":139,"hmax":140,"dmeas":141,"dcalc":142,"primary_image_id":143},10390,"Micheelsenite","(Ca,Y)\u003Csub>3\u003C\u002Fsub>Al(PO\u003Csub>3\u003C\u002Fsub>OH)(CO\u003Csub>3\u003C\u002Fsub>)(OH)\u003Csub>6\u003C\u002Fsub> · 12H\u003Csub>2\u003C\u002Fsub>O","(Ca\u003Csub>2\u003C\u002Fsub>Y)Al(PO\u003Csub>3\u003C\u002Fsub>OH)(CO\u003Csub>3\u003C\u002Fsub>)(OH)\u003Csub>6\u003C\u002Fsub>·12H\u003Csub>2\u003C\u002Fsub>O",3.5,4,"2.15","2.17",16186,{"id":145,"name":146,"entrytype":9,"csystem":37,"ima_formula":147,"mindat_formula":148,"hmin":43,"hmax":43,"dmeas":11,"dcalc":149,"primary_image_id":11},53414,"Siwaqaite","Ca\u003Csub>6\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(CrO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub> · 26H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>6\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(CrO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub>·26H\u003Csub>2\u003C\u002Fsub>O","1.819",{"id":151,"name":152,"entrytype":9,"csystem":37,"ima_formula":153,"mindat_formula":154,"hmin":45,"hmax":45,"dmeas":155,"dcalc":156,"primary_image_id":157},3817,"Sturmanite","Ca\u003Csub>6\u003C\u002Fsub>Fe\u003Csup>3+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2.5\u003C\u002Fsub>[B(OH)\u003Csub>4\u003C\u002Fsub>](OH)\u003Csub>12\u003C\u002Fsub> · 25H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>6\u003C\u002Fsub>Fe\u003Csup>3+\u003C\u002Fsup>\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2.5\u003C\u002Fsub>[B(OH)\u003Csub>4\u003C\u002Fsub>](OH)\u003Csub>12\u003C\u002Fsub>·25H\u003Csub>2\u003C\u002Fsub>O","1.847","1.855",81269,{"id":159,"name":160,"entrytype":9,"csystem":89,"ima_formula":161,"mindat_formula":162,"hmin":118,"hmax":118,"dmeas":97,"dcalc":163,"primary_image_id":164},46816,"Tatarinovite","Ca\u003Csub>3\u003C\u002Fsub>Al(SO\u003Csub>4\u003C\u002Fsub>)[B(OH)\u003Csub>4\u003C\u002Fsub>](OH)\u003Csub>6\u003C\u002Fsub> · 12H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>3\u003C\u002Fsub>Al(SO\u003Csub>4\u003C\u002Fsub>)[B(OH)\u003Csub>4\u003C\u002Fsub>](OH)\u003Csub>6\u003C\u002Fsub>·12H\u003Csub>2\u003C\u002Fsub>O","1.777",23700,{"id":166,"name":167,"entrytype":9,"csystem":89,"ima_formula":168,"mindat_formula":169,"hmin":139,"hmax":139,"dmeas":170,"dcalc":171,"primary_image_id":172},3933,"Thaumasite","Ca\u003Csub>3\u003C\u002Fsub>Si(OH)\u003Csub>6\u003C\u002Fsub>(CO\u003Csub>3\u003C\u002Fsub>)(SO\u003Csub>4\u003C\u002Fsub>) · 12H\u003Csub>2\u003C\u002Fsub>O","Ca\u003Csub>3\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)[Si(OH)\u003Csub>6\u003C\u002Fsub>](CO\u003Csub>3\u003C\u002Fsub>)·12H\u003Csub>2\u003C\u002Fsub>O","1.877","1.90",24028,[],[],[176,182],{"id":177,"txt":178,"latitude":179,"longitude":180,"country":181},204853,"Ettringer Feld, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany",50.3457903,7.222164,"Germany",{"id":183,"txt":184,"latitude":185,"longitude":186,"country":181},204856,"Mayener Feld, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany",50.3347222,7.2391667,101,[189,193,197,200,204,208,213,217,221,225,228,233,237,242,247,252,256,260,265,269,274,279,284,288,291,295,299,303,307,311,315,319,324,329,334,339,343,347,352,357],{"id":190,"year":191,"html":192,"doi":11},16108673,1873,"Vom Rath, G. (1873) Über ein neues Mineral (Chalkomorphit) auf einem Einschluß in der Lava von Niedermendig. Annalen der Chemie und Physik, Ergänzungsband VI: 376-378.",{"id":194,"year":195,"html":196,"doi":11},16108674,1874,"Lehmann, J. (1874) Untersuchungen über die Einwirkung eines feurig-flüssigen basaltischen Magmas auf Gesteins- und Mineraleinschlüsse. Verhandlungen des naturhistorischen Vereins der preußischen Rheinlande und Westfalens, in Kommission bei M. Cohen: 31: 1-40.",{"id":198,"year":195,"html":199,"doi":11},16108675,"Lehmann, J. (1874) Über den Ettringit, ein neues Mineral in Kalkeinschlüssen der Lava von Ettringen (Laacher Gebiet). Neues Jahrbuch für Mineralogie, Geologie und Paläontologie: 273-275.",{"id":201,"year":202,"html":203,"doi":11},16108676,1893,"Moses, A.J. (1893) Mineralogical notes. American Journal of Science: 45: 488-492.",{"id":205,"year":206,"html":207,"doi":11},15944240,1922,"Brauns, Reinhard (1922) \u003Ci>Die Mineralien der Niederrheinischen Vulkangebiete\u003C\u002Fi> - Mit besonderer Berücksichtigung ihrer Bildung und Umbildung. E. Schweizerbart'sche Verlagsbuchhandlung.",{"id":209,"year":210,"html":211,"doi":212},4014,1936,"Bannister, F. A. (1936) Ettringite from Scawt Hill, Co. Antrim. \u003Ci>Mineralogical Magazine and Journal of the Mineralogical Society\u003C\u002Fi>,  24 (153) 324-329 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1936.024.153.05'>doi:10.1180\u002Fminmag.1936.024.153.05\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_24\u002F24-153-324.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1936.024.153.05",{"id":214,"year":215,"html":216,"doi":11},1118652,1951,"Palache, Charles; Berman, Harry; Frondel, Clifford (1951) \u003Ci>The System of Mineralogy\u003C\u002Fi> (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.",{"id":218,"year":219,"html":220,"doi":11},523203,1959,"Fleischer, M. (1959) New Mineral Names. \u003Ci>American Mineralogist\u003C\u002Fi>,  44 (3-4). 464-470 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM44\u002FAM44_464.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":222,"year":223,"html":224,"doi":11},523453,1960,"Hurlbut, C. S., Baum, J. L. (1960) Ettringite from Franklin, New Jersey. \u003Ci>American Mineralogist\u003C\u002Fi>,  45 (11-12) 1137-1143 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM45\u002FAM45_1137.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":226,"year":223,"html":227,"doi":11},523467,"Murdoch, J., Chalmers, R. A. (1960) Ettringite (\"Woodfordite\") from Crestmore, California. \u003Ci>American Mineralogist\u003C\u002Fi>,  45 (11-12) 1275-1278 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM45\u002FAM45_1275.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":229,"year":230,"html":231,"doi":232},5666,1962,"McConnell, Duncan, Murdoch, Joseph (1962) Crystal chemistry of ettringite. \u003Ci>Mineralogical Magazine and Journal of the Mineralogical Society\u003C\u002Fi>,  33 (256) 59-64 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1962.033.256.09'>doi:10.1180\u002Fminmag.1962.033.256.09\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_33\u002F33-256-59.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1962.033.256.09",{"id":234,"year":235,"html":236,"doi":11},523979,1963,"Carpenter, A. B. (1963) Oriented overgrowths of thaumasite on ettringite. \u003Ci>American Mineralogist\u003C\u002Fi>,  48 (11-12) 1394-1395 \u003Ca target='_blank' href='http:\u002F\u002Fwww.minsocam.org\u002Fammin\u002FAM48\u002FAM48_1394.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":238,"year":239,"html":240,"doi":241},2568423,1968,"MOORE, A., TAYLOR, H. F. W. (1968) Crystal Structure of Ettringite. \u003Ci>Nature\u003C\u002Fi>, 218 (5146). 1048-1049 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1038\u002F2181048a0'>doi:10.1038\u002F2181048a0\u003C\u002Fa>","10.1038\u002F2181048a0",{"id":243,"year":244,"html":245,"doi":246},217262,1970,"Moore, A. E., Taylor, H. F. W. (1970) Crystal structure of ettringite. \u003Ci>Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry\u003C\u002Fi>,  26 (4) 386-393 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1107\u002Fs0567740870002443'>doi:10.1107\u002Fs0567740870002443\u003C\u002Fa>","10.1107\u002Fs0567740870002443",{"id":248,"year":249,"html":250,"doi":251},6708,1973,"Taylor, H. F. W. (1973) Crystal structures of some double hydroxide                         minerals. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  39 (304). 377-389 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.1973.039.304.01'>doi:10.1180\u002Fminmag.1973.039.304.01\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002FMinMag\u002FVolume_39\u002F39-304-377.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.1973.039.304.01",{"id":253,"year":254,"html":255,"doi":11},16108687,1981,"von Kollmann, H., Strübel, G. (1981) Ettringite-thaumasite mixed crystals of Brenk. \u003Ci>Chemie der Erde\u003C\u002Fi>,  40. 110-120",{"id":257,"year":258,"html":259,"doi":11},16108688,1990,"Kumarathasan, P., McCarthy, G.J., Hassett, D.J., Pflughoeft-Hassett, D.F. (1990) Oxyanion substituted ettringites: synthesis and characterization; and their potential role in immobilization of arsenic, boron, chromium, selenium and vanadium. Mater. Res. Soc. Symp. Proc. 178 (Fly Ash and Coal Conversion By-Products): 83-104.",{"id":261,"year":262,"html":263,"doi":264},15852,1991,"Macleod, G., Hall, A. J. (1991) Whisker crystals of the mineral ettringite. \u003Ci>Mineralogy and Petrology\u003C\u002Fi>,  43 (3) 211-215 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fbf01166892'>doi:10.1007\u002Fbf01166892\u003C\u002Fa>","10.1007\u002Fbf01166892",{"id":266,"year":267,"html":268,"doi":11},16108690,1992,"McCarthy, G.J., Hassett, D.J., Bender, J.A. (1992) Synthesis, crystal chemistry and stability of ettringite, a material with potential applications in hazardous waste immobilization. Mater. Res. Soc. Symp. Proc.: 245: 129-140.",{"id":270,"year":271,"html":272,"doi":273},347186,1998,"Myneni, Satish C.B., Traina, Samuel J., Waychunas, Glenn A., Logan, Terry J. (1998) Vibrational spectroscopy of functional group chemistry and arsenate coordination in ettringite. \u003Ci>Geochimica et Cosmochimica Acta\u003C\u002Fi>,  62 (21) 3499-3514 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fs0016-7037(98)00221-x'>doi:10.1016\u002Fs0016-7037(98)00221-x\u003C\u002Fa>","10.1016\u002Fs0016-7037(98)00221-x",{"id":275,"year":276,"html":277,"doi":278},16108692,2000,"Barnett, S. J.; Adam, C. D.; Jackson, A. R. W. (2000) Solid solutions between ettringite, Ca\u003Csub>6\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub>·26H\u003Csub>2\u003C\u002Fsub>O, and thaumasite, Ca\u003Csub>3\u003C\u002Fsub>SiSO\u003Csub>4\u003C\u002Fsub>CO\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>6\u003C\u002Fsub>·12H\u003Csub>2\u003C\u002Fsub>O. \u003Ci>Journal of Materials Science\u003C\u002Fi>,  35 (16). 4109-4114 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1023\u002Fa:1004898623884'>doi:10.1023\u002Fa:1004898623884\u003C\u002Fa>","10.1023\u002Fa:1004898623884",{"id":280,"year":281,"html":282,"doi":283},16125519,2001,"Barnett, S.J.; Adam, C.D.; Jackson, A.R.W. (2001) An XRPD profile fitting investigation of the solid solution between ettringite, Ca6Al2(SO4)3(OH)12·26H2O, and carbonate ettringite, Ca6Al2(CO3)3(OH)12·26H2O. \u003Ci>Cement and Concrete Research\u003C\u002Fi>,  31 (1). 13-17 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fs0008-8846(00)00429-4'>doi:10.1016\u002Fs0008-8846(00)00429-4\u003C\u002Fa>","10.1016\u002Fs0008-8846(00)00429-4",{"id":285,"year":286,"html":287,"doi":11},16108695,2002,"Grier, D.G., Jarabek, E.L., Peterson, R.B., Mergen, L.E., McCarthy, G.J. (2002) Rietveld structure refinement of carbonate and sulfite ettringite. Advances in X-ray Analysis: 45: 194-199.",{"id":289,"year":286,"html":290,"doi":11},16108696,"Barnett, S.J., Macphee, D.E., Lachowski, E.E., Crammond, N.J. (2002) XRD, EDX and IR analysis of solid solutions between thaumasite and ettringite. Cement and Concrete Research: 32: 719-730.",{"id":292,"year":286,"html":293,"doi":294},63711,"Antao, S. M., Duane, M. J., Hassan, I. (2002) DTA, TG, and XRD studies of sturmanite and ettringite. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  40 (5). 1403-1409 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2113\u002Fgscanmin.40.5.1403'>doi:10.2113\u002Fgscanmin.40.5.1403\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fdoclib\u002Fcm\u002Fvol40\u002FCM40_1403.pdf' class='refpdflink'>\u003C\u002Fa>","10.2113\u002Fgscanmin.40.5.1403",{"id":296,"year":297,"html":298,"doi":11},16108697,2003,"Barnett, S.J., Macphee, D.E., Crammond, N.J. (2003) Extent of immiscibility in the ettringite–thaumasite system. Cement and Concrete Composites: 25: 851-855.",{"id":300,"year":301,"html":302,"doi":11},16108698,2004,"Zhou, Q., Lachowski, E.E., Glasser, F.P. (2004) Metaettringite, a decomposition product of ettringite. Cement and Concrete Research: 34: 703-710.",{"id":304,"year":301,"html":305,"doi":306},18134227,"Torres, S.M., Kirk, C.A., Lynsdale, C.J., Swamy, R.N., Sharp, J.H. (2004) Thaumasite–ettringite solid solutions in degraded mortars. \u003Ci>Cement and Concrete Research\u003C\u002Fi>,  34 (8). 1297-1305 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.cemconres.2003.09.016'>doi:10.1016\u002Fj.cemconres.2003.09.016\u003C\u002Fa>","10.1016\u002Fj.cemconres.2003.09.016",{"id":308,"year":309,"html":310,"doi":11},16964166,2005,"(2005) Ettringite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fettringite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":312,"year":313,"html":314,"doi":11},16108700,2006,"Hartman, M.R., Berliner, R. (2006) Investigation of the structure of ettringite by time-of-flight neutron powder diffraction techniques. Cement and Concrete Research: 36: 364-370.",{"id":316,"year":313,"html":317,"doi":318},16108699,"Goetz-Neunhoeffer, F.; Neubauer, J. (2006) Refined ettringite (Ca\u003Csub>6\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub>∙26H\u003Csub>2\u003C\u002Fsub>O) structure for quantitative X-ray diffraction analysis. \u003Ci>Powder Diffraction\u003C\u002Fi>,  21 (1). 4-11 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1154\u002F1.2146207'>doi:10.1154\u002F1.2146207\u003C\u002Fa>","10.1154\u002F1.2146207",{"id":320,"year":321,"html":322,"doi":323},16108701,2009,"Möschner, Göril; Lothenbach, Barbara; Winnefeld, Frank; Ulrich, Andrea; Figi, Renato; Kretzschmar, Ruben (2009) Solid solution between Al-ettringite and Fe-ettringite (Ca\u003Csub>6\u003C\u002Fsub>[Al\u003Csub>1-x\u003C\u002Fsub>Fe\u003Csub>x\u003C\u002Fsub>(OH)\u003Csub>6\u003C\u002Fsub>]\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>.26H\u003Csub>2\u003C\u002Fsub>O). \u003Ci>Cement and Concrete Research\u003C\u002Fi>,  39 (6). 482-489 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.cemconres.2009.03.001'>doi:10.1016\u002Fj.cemconres.2009.03.001\u003C\u002Fa>","10.1016\u002Fj.cemconres.2009.03.001",{"id":325,"year":326,"html":327,"doi":328},396706,2011,"Sokol, E. V., Gaskova, O. L., Kokh, S. N., Kozmenko, O. A., Seryotkin, Y. V., Vapnik, Y., Murashko, M. N. (2011) Chromatite and its Cr\u003Csup>3+\u003C\u002Fsup>- and Cr\u003Csup>6+\u003C\u002Fsup>-bearing precursor minerals from the Nabi Musa Mottled Zone complex, Judean Desert. \u003Ci>American Mineralogist\u003C\u002Fi>,  96 (4). 659-674 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam.2011.3487'>doi:10.2138\u002Fam.2011.3487\u003C\u002Fa>","10.2138\u002Fam.2011.3487",{"id":330,"year":331,"html":332,"doi":333},16554782,2015,"Scholtzová, Eva, Kucková, Lenka, Kožíšek, Jozef, Tunega, Daniel (2015) Structural and spectroscopic characterization of ettringite mineral – combined DFT and experimental study. \u003Ci>Journal of Molecular Structure\u003C\u002Fi>,  1100. 215-224 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1016\u002Fj.molstruc.2015.06.075'>doi:10.1016\u002Fj.molstruc.2015.06.075\u003C\u002Fa>","10.1016\u002Fj.molstruc.2015.06.075",{"id":335,"year":336,"html":337,"doi":338},3927291,2017,"Skibsted, Jørgen, Pedersen, Malene T., Holzinger, Julian (2017) Resolution of the Two Aluminum Sites in Ettringite by \u003Csup>27\u003C\u002Fsup>Al MAS and MQMAS NMR at Very High Magnetic Field (22.3 T). \u003Ci>The Journal of Physical Chemistry C\u003C\u002Fi>,  121 (7). 4011-4017 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1021\u002Facs.jpcc.6b11875'>doi:10.1021\u002Facs.jpcc.6b11875\u003C\u002Fa>","10.1021\u002Facs.jpcc.6b11875",{"id":340,"year":336,"html":341,"doi":342},398346,"Geng, Guoqing, Myers, Rupert J., Kilcoyne, Arthur L.D., Ha, Juyoung, Monteiro, Paulo J.M. (2017) CaL2,3-edge near edge X-ray absorption fine structure of tricalcium aluminate, gypsum, and calcium (sulfo)aluminate hydrates. \u003Ci>American Mineralogist\u003C\u002Fi>,  102 (4) 900-908 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam-2017-5670'>doi:10.2138\u002Fam-2017-5670\u003C\u002Fa>","10.2138\u002Fam-2017-5670",{"id":344,"year":336,"html":345,"doi":346},154230,"Seryotkin, Yurii V., Sokol, Ella V., Kokh, Svetlana N., Murashko, Mikhail N. (2017) Natural Cr\u003Csup>3+\u003C\u002Fsup>-rich ettringite: occurrence, properties, and crystal structure. \u003Ci>Physics and Chemistry of Minerals\u003C\u002Fi>,  45 (3). 279-292 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fs00269-017-0917-y'>doi:10.1007\u002Fs00269-017-0917-y\u003C\u002Fa>","10.1007\u002Fs00269-017-0917-y",{"id":348,"year":349,"html":350,"doi":351},18134218,2019,"Gatta, G. Diego, Hålenius, Ulf, Bosi, Ferdinando, Cañadillas-Delgado, Laura, Fernandez-Diaz, Maria Teresa (2019) Minerals in cement chemistry: A single-crystal neutron diffraction study of ettringite, Ca\u003Csub>6\u003C\u002Fsub>Al\u003Csub>2\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>3\u003C\u002Fsub>(OH)\u003Csub>12\u003C\u002Fsub>·27H\u003Csub>2\u003C\u002Fsub>O. \u003Ci>American Mineralogist\u003C\u002Fi>,  104 (1). 73-78 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.2138\u002Fam-2019-6783'>doi:10.2138\u002Fam-2019-6783\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fuploads\u002FAM104_73.pdf' class='refpdflink'>\u003C\u002Fa>","10.2138\u002Fam-2019-6783",{"id":353,"year":354,"html":355,"doi":356},13223910,2021,"Ogorodova, L. P., Gritsenko, Yu. D., Kosova, D. A., Vigasina, M. F., Melchakova, L. V., Ksenofontov, D. A., Dedushenko, S. K. (2021) Physicochemical and Thermochemical Study of Ettringite. \u003Ci>Geochemistry International\u003C\u002Fi>, 59 (12) 1188-1197 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1134\u002Fs0016702921100050'>doi:10.1134\u002Fs0016702921100050\u003C\u002Fa>","10.1134\u002Fs0016702921100050",{"id":358,"year":359,"html":360,"doi":361},17540208,2024,"Colmenero, Francisco, Fernández, Ana María, Almendros-Ginestà, Oscar, Missana, Tiziana (2024) Density Functional Theory Study of the Crystal Structure and Infrared Spectrum of a Synthetized Ettringite Mineral. \u003Ci>Minerals\u003C\u002Fi>,  14 (8)  \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3390\u002Fmin14080824'>doi:10.3390\u002Fmin14080824\u003C\u002Fa>","10.3390\u002Fmin14080824",[363,373,382,391,399,407,414,423,430,438,448,454,462,470,477,485,492,500,508,515,521,528,536,543,550,557,564,571,578,586,592,599,608,615,621,628,635,642,649,655,660,668,675],{"id":364,"source_url":365,"license_code":366,"credit_html":367,"title":368,"description":369,"author":370,"original_width":371,"original_height":372},8112,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=7099020","CC BY-SA 3.0","Didier Descouens, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=7099020\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite.jpg","Ettringite - N'Chwaning Mines, Kalahari manganese fields, Northern Cape Province, South Africa (6.5x3.2 cm)","Didier Descouens",3949,2485,{"id":374,"source_url":375,"license_code":366,"credit_html":376,"title":377,"description":378,"author":379,"original_width":380,"original_height":381},8113,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163495","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10163495\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-229594.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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: 2.1 x 1.7 x 1.5 cm.\u003C\u002Fdd>\n\u003Cdd>A sharp, lustrous, bright canary-yellow ettringite crystal attractively set on a matrix of smaller ettringite crystals. The translucent crystal is sharply terminated and has textbook, hexagonal crystal form. A highly representative specimen of the species from one of the N’Chwaning Mines of South Africa and the Charlie Key Collection.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Robert M. Lavinsky",669,750,{"id":383,"source_url":384,"license_code":366,"credit_html":385,"title":386,"description":387,"author":388,"original_width":389,"original_height":390},53796,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9003689","JosefLehmkuhl, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=9003689\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringiteingeschlossen.JPG","Vulkangestein mit eingeschlossenem Ettringit, Fundort Ettringen \u002F Eifel","JosefLehmkuhl",800,533,{"id":392,"source_url":393,"license_code":366,"credit_html":394,"title":395,"description":396,"author":379,"original_width":397,"original_height":398},8115,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174322","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174322\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-290217.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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: 3.3 x 2.6 x 2.5 cm.\u003C\u002Fdd>\n\u003Cdd>An exceptional, three-dimensional crust composed completely of superb Ettringite crystals. The Ettringites are gemmy, a beautiful lemon-yellow color, lustrous, and have excellent habit in sharp hexagonal prisms. The largest of the crystals reach about .5 cm, and on average they are about .3 cm. Very aesthetic. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",465,396,{"id":400,"source_url":401,"license_code":366,"credit_html":402,"title":403,"description":404,"author":379,"original_width":405,"original_height":406},53797,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120323","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10120323\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-21317.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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>Lovely cluster of crystals with a nice yellow color, good luster, and a translucent to almost transparent clarity. As good as the main 3.1 cm crystal is, the smaller ones are just as attractive and add very good balance and aesthetics to the piece. 3.1 x 1.7 x 0.8 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",374,600,{"id":408,"source_url":409,"license_code":366,"credit_html":410,"title":411,"description":412,"author":379,"original_width":406,"original_height":413},53798,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10121965","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10121965\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-24339.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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>A specially bright, 3-dimensional specimen that has formed a hemispherical shape. BRILLIANT YELLOW COLOR. Nice! New find! 3.5 x 2.3 x 1.1 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",492,{"id":415,"source_url":416,"license_code":366,"credit_html":417,"title":418,"description":419,"author":420,"original_width":421,"original_height":422},8117,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14866272","Leon Hupperichs, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14866272\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-99347.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Concordia smelter (slag locality), Eschweiler, Aachen, North Rhine-Westphalia, Germany\u003C\u002Fdd>\n\u003Cdd>Field of view 4 mm. Collected in april 2007. Specimen and photo Leon Hupperichs.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Leon Hupperichs",798,594,{"id":424,"source_url":425,"license_code":366,"credit_html":426,"title":427,"description":428,"author":379,"original_width":406,"original_height":429},53800,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10147219","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10147219\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-158846.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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: 2.5 x 1.9 x 1.3 cm.\u003C\u002Fdd>\n\u003Cdd>A gorgeous thumber of FINE ettringite crystals from N'Chwaning - all terminated, with superb bright yellow color and shiny luster! VERY RARE in this quality! From the well-known California collection of Charles Hansen.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",483,{"id":431,"source_url":432,"license_code":366,"credit_html":433,"title":434,"description":435,"author":420,"original_width":436,"original_height":437},8118,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14866285","Leon Hupperichs, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=14866285\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-99753.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Concordia smelter (slag locality), Eschweiler, Aachen, North Rhine-Westphalia, Germany\u003C\u002Fdd>\n\u003Cdd>Field of view 8 mm. Collected in april 2007. Specimen and photo Leon Hupperichs.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",776,577,{"id":439,"source_url":440,"license_code":441,"credit_html":442,"title":443,"description":444,"author":445,"original_width":446,"original_height":447},8119,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=129625566","CC BY-SA 4.0","Raimond Spekking, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=129625566\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite. South Africa-8876.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa> - Place of discovery: South Africa","Raimond Spekking",6199,3487,{"id":449,"source_url":450,"license_code":366,"credit_html":451,"title":452,"description":396,"author":379,"original_width":397,"original_height":453},53804,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174324","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10174324\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-290218.jpg",303,{"id":455,"source_url":456,"license_code":366,"credit_html":457,"title":458,"description":459,"author":379,"original_width":460,"original_height":461},53806,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448354","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448354\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Kalahari-Namibia-50mm 0679.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, 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-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 4 x 4 x 3 cm\n\u003Cdl>\u003Cdt>Ettringite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This piece features a 3 x 1 x 1 cm, perfectly formed and doubly-terminated ettringite hanging precariously (but securely!) on a matrix shard. Aesthetic and unusual!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",2682,3073,{"id":463,"source_url":464,"license_code":441,"credit_html":465,"title":466,"description":467,"author":468,"original_width":276,"original_height":469},53807,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=46783825","Géry PARENT, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=46783825\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite 7100. 5312.jpg","ettringite  : N’Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa","Géry PARENT",1333,{"id":471,"source_url":472,"license_code":366,"credit_html":473,"title":474,"description":475,"author":379,"original_width":476,"original_height":406},39468,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10148210","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10148210\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-163266.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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: 2.8 x 2.3 x 1.7 cm.\u003C\u002Fdd>\n\u003Cdd>A translucent, fat crystal of ettringite - actually technically this is a layered or zoned crystal with ettringite as a layer on the outside (yellow in color) coating an internal core of charlesite, a related species. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",541,{"id":478,"source_url":479,"license_code":366,"credit_html":480,"title":481,"description":482,"author":379,"original_width":483,"original_height":484},39469,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172020","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172020\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-279121.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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: 5.6 x 2 x 1.7 cm.\u003C\u002Fdd>\n\u003Cdd>This unusual elongated crystal specimen appears to consist of a white charlesite crystal with an outer layer of powdery-lemon-yellow ettringite atop, from what I am given to understand about how these species form in a related series. The outer layer of colored ettringite is very thin, less than 1 mm, and most of this crystal is therefore clear and colorless. It is slightly etched and matte-finish. I am sure all in this pocket are zoned in some degree to charlesite and\u002For sturmanite but this one is distinctly different, with the totally clear core showing so well. Charlesite is a close relative of sturmanite and ettringite, and my understanding is that most crystals of either of the two yellow and more common species are actually zoned, and are thus partial charlesite. However, this crystal seems to have a pure, clear core which I suspect is charlesite, perhaps pure (not analysed). Unusual, in any case.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",604,1024,{"id":486,"source_url":487,"license_code":366,"credit_html":488,"title":489,"description":490,"author":379,"original_width":484,"original_height":491},39470,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172051","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172051\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-279144.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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: 19 x 13 x 11 cm.\u003C\u002Fdd>\n\u003Cdd>This is a huge specimen, with more ettringite in one place than I have ever seen. It is really subtle in its beauty, with oyelite between the cracks in the crystals, providing a white web-work background on which the powder-lemon-yellow crystals stand out all the more dramatically. There is some damage to the edges of the large crystal cluster, where peripheral-facing tips are missing or there is a contact point. But the core cluster is very 3-dimensional, gemmy, and capped by the best terminated crystal: The large crystal in the middle is 10 cm tall, and has a freestanding termination. Charlesite is a close relative of sturmanite and ettringite, and my understanding is that most crystals of either of the two yellow and more common species are actually zoned, and are thus partial charlesite. However, this crystal seems to have a pure, clear core which I suspect is charlesite, perhaps pure (not analysed). Unusual, in any case. Even more than on other specimens in this lot, many crystals here appear to consist of a white charlesite crystal with an outer layer of powdery-lemon-yellow ettringite atop, from what I am given to understand about how these species form in a related series. The outer layer of colored ettringite is very thin, less than 1 mm, and most of this crystal is therefore clear and colorless. These larger crystals (but not the smaller ones) are slightly etched and matte compared to other crystals in this pocket, perhaps part of the phenomena revealing the clear cores. I am sure all in this pocket are zoned in some degree to charlesite and\u002For sturmanite; but this one is distinctly different, with the totally clear core showing so nicely. The backside of the specimen has hausmannite, hematite, and oyelite. 1.3 kilograms.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",815,{"id":493,"source_url":494,"license_code":366,"credit_html":495,"title":496,"description":497,"author":379,"original_width":498,"original_height":499},39471,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448370","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448370\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Kalahari-Namibia-62mm 0706.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, 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-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 5.6 x 2 x 1.7 cm\n\u003Cdl>\u003Cdt>Ettringite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This unusual elongated crystal specimen appears to consist of a white charlesite crystal with an outer layer of powdery-lemon-yellow ettringite atop, from what i am given to understand about how these species form in a related series. The outer layer of colored ettringite is very thin, under 1 mm, and most of this crystal is therefore clear and colorless. It is slightly etched and matte compared to other crystals here. I am sure all in this pocket are zoned in some degree to charlesite and\u002For sturmanite but this one is distinctly different, with the totally clear core showing so well. Charlesite is a close relative of sturmanite and ettringite, and my understanding is that most crystals of either of the two yellow and more common species are actually zoned, and are thus partial charlesite. However, this crystal seems to have a pure, clear core which i suspect is charlesite, perhaps pure. (not analysed). Unusual, in any case!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",2375,4023,{"id":501,"source_url":502,"license_code":366,"credit_html":503,"title":504,"description":505,"author":379,"original_width":506,"original_height":507},39472,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448419","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448419\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Kalahari-Namibia-205mm 0586.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, 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-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: large cabinet, 19 x 13 x 11 cm\n\u003Cdl>\u003Cdt>Ettringite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This is a huge specimen, with more ettringite in one place than I have ever seen. It is really subtle in its beauty, with oyelite between the cracks in the crystals, providing a white webwork background on which the powder-lemon-yellow crystals stand out all the more dramatically. There is some damage to the edges of the large crystal cluster, where peripheral-facing tips are missing or there is a contact point. But the core clustre is very 3-dimensional, gemmy, and capped by the best terminated crystal: The large crystal in the middle is 10 cm tall, and has a freestanding termination. Charlesite is a close relative of sturmanite and ettringite, and my understanding is that most crystals of either of the two yellow and more common species are actually zoned, and are thus partial charlesite. However, this crystal seems to have a pure, clear core which i suspect is charlesite, perhaps pure. (not analysed). Unusual, in any case! Even more than on other specimens in this lot, many crystals here appear to consist of a white charlesite crystal with an outer layer of powdery-lemon-yellow ettringite atop, from what i am given to understand about how these species form in a related series. The outer layer of colored ettringite is very thin, under 1 mm, and most of this crystal is therefore clear and colorless. These larger crystals (but not the smaller ones) are slightly etched and matte compared to other crystals in this pocket, perhaps part of the phenomena revealing the clear cores. I am sure all in this pocket are zoned in some degree to charlesite and\u002For sturmanite; but this one is distinctly different, with the totally clear core showing so nicely. A MUSEUM PIECE, in both size and visual impact, even for the public who will not care about the fascinating chemistry revealed here in a gigantic specimen of a very rare species. The backside of the specimen has hausmannite, hematite, and oyelite. 1.3 kilos.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",4368,2912,{"id":509,"source_url":510,"license_code":366,"credit_html":511,"title":512,"description":505,"author":379,"original_width":513,"original_height":514},39473,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448421","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448421\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Kalahari-Namibia-205mm 0591.jpg",1800,1433,{"id":516,"source_url":517,"license_code":366,"credit_html":518,"title":519,"description":520,"author":379,"original_width":389,"original_height":436},8114,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10164991","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10164991\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Hematite-Gaudefroyite-238790.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FHematite\" class=\"extiw\" title=\"en:Hematite\">Hematite\u003C\u002Fa>, \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\u002FCalcite\" class=\"extiw\" title=\"en:Calcite\">Calcite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, 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-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 10 x 8 x 4 cm.\u003C\u002Fdd>\n\u003Cdd>An incredible, beautiful combination specimen featuring two large ettringite crystals of lemon yellow hue perched on sparkling and contrasting crystallized white calcite and gaudefroyite, further accented by a hematite crystal atop. The hematite is striking, and is 2.25 cm long and doubly terminated, scalenohedral in form. The ettringite crystals are to 4.5 cm in length and shimmer with electric sheen on the surface, and have deep color that does not convey well in the photo. This is a very rare, large example of the species in super aesthetic form. It was found in the mid to late 1980s. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":522,"source_url":523,"license_code":366,"credit_html":524,"title":525,"description":526,"author":379,"original_width":513,"original_height":527},8116,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448340","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448340\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-Ettringite-Kalahari-Namibia-136mm 0762closeup.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, 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-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 13.7 x 7.5 x 7 cm\n\u003Cdl>\u003Cdt>Ettringite on Oyelite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>One of the larger good matrix specimens, this is a beautiful matrix piece, rare for the species, with a 3-dimensional cluster of crystals perfectly centered on matrix. Very aesthetic! The crystals are to 3.2 cm long, and the cluster overall is 5.2 cm across. All are starkly contrasting against a rolling carpet of soft white Oyelite. The crystals are a soft, lemon-yellow color, translucent, completely formed and free of damage. They have an unusual shimmering surface sheen , very attractive. The matrix is a manganese-rich ore completely covered on the front by a blanket of soft Oyelite deposition on its front side. It is covered on the backside with BRILLIANTLY sparkling carpet of thousands of micro-hausmannite crystals and a few little metallic hematites. This combination overall is vastly different from anything else I have seen for the species, and quite unusual in any case.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1438,{"id":529,"source_url":530,"license_code":366,"credit_html":531,"title":532,"description":533,"author":379,"original_width":534,"original_height":535},53801,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10164992","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10164992\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Gaudefroyite-238791.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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: N'Chwaning II Mine, 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-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: 5 x 5 x 2.25 cm.\u003C\u002Fdd>\n\u003Cdd>A glowing yellow cluster of large, translucent, thick ettringite crystals on a bit of calcite matrix, and with contrasting black gaudefroyite upon the right side. The large crystal is fully terminated, though admittedly has a contact on the left side where it grew against another crystal no longer present. Still, the upright, freestanding crystal is extremely dramatic, is complete; and such crystals are rare. Usually they are flatlying, whereas this is freestanding and vertical. The smaller crystal at the base is fully terminated and complete. Ex. Charlie Key.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",382,400,{"id":537,"source_url":538,"license_code":366,"credit_html":539,"title":540,"description":541,"author":379,"original_width":406,"original_height":542},37278,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10170390","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10170390\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Brucite-266930.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FBrucite\" class=\"extiw\" title=\"en:Brucite\">Brucite\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: 4.4 x 3.0 x 2.0 cm.\u003C\u002Fdd>\n\u003Cdd>Lustrous, gemmy, canary-yellow ettringite microcrystals cover the 3-dimensional crust of contrasting snow-white brucite on this fine combination specimen from the Wessels Mine of South Africa. Brucite is an uncommon magnesium hydroxide and is definitely one of the lesser known species from the renowned Kalahari Manganese Field.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",452,{"id":544,"source_url":545,"license_code":366,"credit_html":546,"title":547,"description":548,"author":379,"original_width":549,"original_height":484},53802,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172031","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172031\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-279127.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\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: 4.1 x 3.2 x 3 cm.\u003C\u002Fdd>\n\u003Cdd>A sharp small miniature specimen, featuring a doubly-terminated crystal to 2.5 cm. A superb miniature featuring soft lemon-yellow color, translucency, and a good surface lustre for this species. Overall very aesthetic, as the crystals are perched on soft oyelite-covered matrix.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",1016,{"id":551,"source_url":552,"license_code":366,"credit_html":553,"title":554,"description":555,"author":379,"original_width":556,"original_height":484},53803,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172037","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172037\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Hausmannite-279134.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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: 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: 5.3 x 2.3 x 2.2 cm.\u003C\u002Fdd>\n\u003Cdd>A sharp miniature with vivid contrasts. This cluster of upright ettringites is host to a crust of brilliantly sparkling, micro-hausmannite crystals on one side. All is perched on a thin shard of calcite and hausmannite-covered matrix. A really nice, elegant miniature, with good color and translucency, representative of this new find.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",682,{"id":558,"source_url":559,"license_code":366,"credit_html":560,"title":561,"description":562,"author":379,"original_width":563,"original_height":484},18491,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172045","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172045\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-Hausmannite-279139.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\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: 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>Small cabinet. Three major crystals dominate the top of this matrix plate of hausmannite, smothered by a soft carpet of oyelite. The two frontal crystals are 4 cm long, and a 5 cm crystal runs under them, linking them all together in a chain of color. A larger, thicker, broken-off crystal is a backstop at the base of the cluster.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",710,{"id":565,"source_url":566,"license_code":366,"credit_html":567,"title":568,"description":569,"author":379,"original_width":507,"original_height":570},53805,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448330","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448330\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-Ettringite-Kalahari-Namibia-74mm 0629.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, 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-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 7.2 x 5.6 x 4 cm\n\u003Cdl>\u003Cdt>Ettringite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This specimen features a 5 x 2 x 1.7 cm ettringite crystal sticking up from a diagonal shard of matrix. The crystal is a pleasing lemon-yellow color, translucent, completely formed and free of damage. It has an unusual shimmering surface sheen to it, as do most of these. It is very rare to find large ettringites on matrix, particularly with such good display, from past finds (mostly in the 1980s).Like most pieces from this pocket, it exhibits an unusually good tapering of the barrel-shaped termination whereas past finds tended to have a more blocky barrel-shape all the way to the termination. The matrix is a black manganese-rich ore with a thin soft Oyelite (perhaps with Bultfonteinite) deposition on its front side. It is speckled at the lower-left with sparkling micro-hausmannite crystals.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",3678,{"id":572,"source_url":573,"license_code":366,"credit_html":574,"title":575,"description":576,"author":379,"original_width":389,"original_height":577},5301,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449986","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449986\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Charlesite-Ettringite-jmix07-166a.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCharlesite\" class=\"extiw\" title=\"en:Charlesite\">Charlesite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, 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-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: miniature, 4 x 3 x 1.7 cm\n\u003Cdl>\u003Cdt>Charlesite with Ettringite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Charlesite is a close relative of ettringite � and this specimen (as the Scott Williams label describes) appears to consist of (white) charlesite crystals with an outer layer of bright yellow ettringite. The crystals measure to one centimeter. You would guess the type locality for charlesite to be somewhere in the Kalahari Manganese Fields, but strangely, it is New Jersey; it wasn�t described until 1983. These crystals are nicely isolated on the dark contrasting matrix. Ex Collection of Scott Williams, also with another dealer label (priced $250).\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",611,{"id":579,"source_url":580,"license_code":366,"credit_html":581,"title":582,"description":583,"author":379,"original_width":584,"original_height":585},5297,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10133846","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10133846\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Sturmanite-Ettringite-Charlesite-49268.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSturmanite\" class=\"extiw\" title=\"en:Sturmanite\">Sturmanite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCharlesite\" class=\"extiw\" title=\"en:Charlesite\">Charlesite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, 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-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>A SUPERB, LARGE and glassy yellow-brown crystal that exhibits all three members of the solid solution series of sturmanite, ettringite and charlesite from the famous Nchwaning II Mine. This undamaged crystal has sturmanite and charlesite on the outside and ettringite on the inside of the crystal. It has a few stepped growth elements on teh edges that show one internal member of the series, charlesite, under the sturmanite coating (those spots are not damage). The backlit photo highlights the translucency and yellow-cored interior composed of the lemon-yellow ettringite. 5.4 x 2.4 x 1.7 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",237,500,{"id":587,"source_url":588,"license_code":366,"credit_html":589,"title":590,"description":576,"author":379,"original_width":535,"original_height":591},5302,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449989","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449989\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Charlesite-Ettringite-jmix07-166c.jpg",317,{"id":593,"source_url":594,"license_code":366,"credit_html":595,"title":596,"description":597,"author":379,"original_width":598,"original_height":484},18490,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172026","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172026\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-279125.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\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: 6.4 x 4 x 2.8 cm.\u003C\u002Fdd>\n\u003Cdd>A robust crystal of approximately 3.4 x 2 x 2 cm, sits snugly atop a soft oyelite-covered matrix. Little accent crystals are abundant on the surface, too, of this very 3-dimensional matrix piece. It exemplifies the qualities of this find: translucency, shimmering surface lustre, and unusual tapering form. It has a pastel lemon-yellow color. It is hard to explain or convey in pictures, but there is a certain ethereal quality to these specimens that makes the crystals look \"soft\" and unusual compared to most other large crystalline species.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",872,{"id":600,"source_url":601,"license_code":366,"credit_html":602,"title":603,"description":604,"author":605,"original_width":606,"original_height":607},19798,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=22326363","Ra'ike, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=22326363\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Portlandite, Ettringite - Mineralogisches Museum Bonn.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FPortlandite\" class=\"extiw\" title=\"en:Portlandite\">Portlandite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: Ettringer Feld, Kro. Mayen, Eifel, Germany\u003C\u002Fdd>\n\u003Cdd>Exposed in the Mineralogical Museum of University Bonn, Germany\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Ra'ike",2851,2563,{"id":609,"source_url":610,"license_code":366,"credit_html":611,"title":612,"description":613,"author":379,"original_width":614,"original_height":389},23140,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10127068","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10127068\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Sturmanite-Ettringite-38536.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FSturmanite\" class=\"extiw\" title=\"en:Sturmanite\">Sturmanite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\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>A brilliantly yellow, lemon-colored, nearly-2-cm crystal is perched atop a knoll of matrix. The large crystal is sturmanite, and the smaller yellow specks in the matrix are probably ettringite - though often the same crystal may host both species in a transitional mix and its hard to say for sure without proper analysis. Surpassingly aesthetic! These came from a small series of finds, now some 20 years ago, and have not been found in this quality since. 4.9 x 4 x 3.6 cm\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",654,{"id":616,"source_url":617,"license_code":366,"credit_html":618,"title":619,"description":576,"author":379,"original_width":535,"original_height":620},39474,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449988","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10449988\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Charlesite-Ettringite-jmix07-166b.jpg",353,{"id":622,"source_url":623,"license_code":366,"credit_html":624,"title":625,"description":626,"author":379,"original_width":535,"original_height":627},56209,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10446186","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10446186\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Calcite-Ettringite-Gaudefroyite-cktsr-35b.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FCalcite\" class=\"extiw\" title=\"en:Calcite\">Calcite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \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\u002FHematite\" class=\"extiw\" title=\"en:Hematite\">Hematite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning II Mine, 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-3067.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: cabinet, 10 x 8 x 4 cm\n\u003Cdl>\u003Cdt>ETTRINGITE with HEMATITE and GAUDEFROYITE on CALCITE\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>Incredible , gorgeous combination specimen featuring two large ettringite crystals of lemon yello whue, perched on sparkling and contrasting CRYSTALLIZED white calcite AND Gaudefroyite, further accented by a hematite crystal atop. The hematite is striking, and is 2.25 cm long and doubly terminated, pseudo-scalenohedral in form. The ettringite crystals are to 4.5 cm in length and shimmer with electric sheen on the surface, and have deep color that does not convey well in the photos. The overall contrast is striking. This is a very rare, large example of the species in super aesthetic form. It was found in the mid to late 1980s. Comes with custom lucite display base.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",375,{"id":629,"source_url":630,"license_code":366,"credit_html":631,"title":632,"description":633,"author":379,"original_width":484,"original_height":634},72195,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172003","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172003\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-279106.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\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: 13.7 x 7.5 x 7 cm.\u003C\u002Fdd>\n\u003Cdd>One of the larger good matrix specimens, this is a beautiful matrix piece, rare for the species, with a 3-dimensional cluster of crystals perfectly centered on matrix. Very aesthetic. The crystals are to 3.2 cm long and the cluster overall is 5.2 cm across. All are starkly contrasting against a rolling carpet of soft white Oyelite. The crystals are a soft, lemon-yellow color, translucent, completely formed and free of damage. They have an unusual shimmering surface sheen, very attractive. The matrix is a manganese-rich ore completely covered on the front by a blanket of soft Oyelite deposition on its front side. It is covered on the backside with a brilliantly sparkling carpet of thousands of micro-hausmannite crystals and a few little metallic hematites. This combination overall is vastly different from anything else I have seen for the species, and quite unusual in any case.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",625,{"id":636,"source_url":637,"license_code":366,"credit_html":638,"title":639,"description":640,"author":379,"original_width":484,"original_height":641},72196,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172034","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172034\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-279132.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\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: 3 x 2.2 x 1 cm.\u003C\u002Fdd>\n\u003Cdd>A very aesthetic large thumbnail specimen, one of few apparently saved and complete, featuring a 3-cm, doubly-terminated crystal atop a soft, oyelite-covered knoll of matrix. The crystal features pastel lemon-yellow color, and translucency characteristic of this pocket.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",843,{"id":643,"source_url":644,"license_code":366,"credit_html":645,"title":646,"description":647,"author":379,"original_width":484,"original_height":648},72197,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172043","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10172043\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Hausmannite-Oyelite-279138.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \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\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\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: 9 x 6 x 5 cm.\u003C\u002Fdd>\n\u003Cdd>This piece is perhaps the most starkly aesthetic and sculptural of the lot, with a single dramatic, lemon yellow crystal just flying up off the matrix, braced in its freefall by a little crossbar crystal. That crystal is the sharpest in the lot, as well....very equant, and very complete-all-around with no damage or dings. It is 4 cm long, 1.5 cm thick. The matrix is hausmannite and hematite, coated by a rich carpet of soft oyelite.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",828,{"id":650,"source_url":651,"license_code":366,"credit_html":652,"title":653,"description":654,"author":379,"original_width":507,"original_height":506},72203,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448333","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448333\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-Ettringite-Kalahari-Namibia-64mm 0651.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, 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-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 6.5 x 3.2 x 2.4 cm\n\u003Cdl>\u003Cdt>Ettringite on Oyelite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This ethereal nicely-sized specimen features a 6-cm-long, doubly-terminated ettringite crystal perched on a small knoll of soft white matrix. The crystal is a soft lemon-yellow color, translucent, and complete all around except for a small, shallow natural contact in the upper-right on one face. It is stark and dramatic, as it rises from the well-trimmed matrix! It has an unusual shimmering surface sheen to it, as do most of these. It is very rare to find large ettringites on matrix, particularly with such good display, from past finds (mostly in the 1980s). The matrix is a manganese-rich ore completely covered with a blanket of soft Oyelite (perhaps with Bultfonteinite) deposition on its front side. It is accented on the backside with sparkling micro-hausmannite crystals.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",{"id":656,"source_url":657,"license_code":366,"credit_html":658,"title":659,"description":526,"author":379,"original_width":506,"original_height":507},72204,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448337","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448337\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Oyelite-Ettringite-Kalahari-Namibia-136mm 0764.jpg",{"id":661,"source_url":662,"license_code":366,"credit_html":663,"title":664,"description":665,"author":379,"original_width":666,"original_height":667},72205,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448400","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448400\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Hausmannite-Oyelite-Ettringite-Kalahari-Namibia-85mm 0623.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \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\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, 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-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet, 9 x 6 x 5 cm\n\u003Cdl>\u003Cdt>Ettringite with Hausmannite and Oyelite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>This piece is perhaps the most starkly aesthetic and sculptural of the lot, with a single dramatic, lemon yellow crystal just flying up off the matrix, braced in its freefall by a little crossbar crystal. That crystal is the sharpest in the lot, as well....VERY equant, and very complete all around with no damage or dings. It is 4 cm long, 1.5 cm thick. The matrix is hausmannite and hematite, coated by a rich carpet of soft oyelite. I have NEVER seen such an example, on contrasting matrix and so 3-dimensional, for sale.\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",3465,2804,{"id":669,"source_url":670,"license_code":366,"credit_html":671,"title":672,"description":665,"author":379,"original_width":673,"original_height":674},72206,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448401","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448401\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Hausmannite-Oyelite-Ettringite-Kalahari-Namibia-85mm 0626.jpg",3221,2655,{"id":676,"source_url":677,"license_code":366,"credit_html":678,"title":679,"description":680,"author":379,"original_width":507,"original_height":681},72207,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448402","Robert M. Lavinsky, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=10448402\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ettringite-Hausmannite-Oyelite-Ettringite-Kalahari-Namibia-90mm 0611.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FEttringite\" class=\"extiw\" title=\"en:Ettringite\">Ettringite\u003C\u002Fa>, \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\u002FOyelite\" class=\"extiw\" title=\"en:Oyelite\">Oyelite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Locality: N'Chwaning I Mine, 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-3068.html\">Locality at mindat.org\u003C\u002Fa>)\u003C\u002Fdd>\n\u003Cdd>Size: small cabinet,\n\u003Cdl>\u003Cdt>Ettringite on Oyelite with Hausmannite\u003C\u002Fdt>\u003C\u002Fdl>\u003C\u002Fdd>\n\u003Cdd>3 major crystals dominate the top of this matrix plate of hausmannite, smothered by a soft carpet of oyelite. The two frontal crystals are 4 cm long, and a 5-cm crystal runs under them, linking them all together in a chain of color. A larger, fatter , broken-off crystal is a backstop at the base of the cluster. Overall this is a dramatic piece, particularly shown in the vertical, and it is more ettringite than one normally sees on one specimen!\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>",4196,[683,689,694,699,704],{"id":684,"url":685,"label":686,"formula":687,"spacegroup":688,"year":349},4278,"\u002Fcif\u002F4278.cif","Gatta 2019","Al2 Ca6 O51 H66 S3","P 3 1 c",{"id":690,"url":691,"label":692,"formula":693,"spacegroup":688,"year":313},4279,"\u002Fcif\u002F4279.cif","Hartman 2006","Ca6 Al2 S3 O49.496 H60.602",{"id":695,"url":696,"label":697,"formula":698,"spacegroup":688,"year":313},4280,"\u002Fcif\u002F4280.cif","Goetz-Neunhoeffer 2006","Ca6 Al2 S3 O50 H64",{"id":700,"url":701,"label":702,"formula":703,"spacegroup":688,"year":244},4281,"\u002Fcif\u002F4281.cif","Moore 1970","Al2 Ca6 O49.68 S3 H63.36",{"id":705,"url":706,"label":707,"formula":708,"spacegroup":709,"year":239},4282,"\u002Fcif\u002F4282.cif","Moore 1968","Ca3 Al S1.5 O24.5 H31","P 63\u002Fm c m",[711,712],"Chalkomorphit","Woodfordite",[714,718,722,726,729,733,740,744,748,752,755,760,764,768,772,775,779,783,787,790,794,798,801],{"lang":715,"names":716},"af",[717],"Ettringiet",{"lang":719,"names":720},"ca",[721],"ettringita",{"lang":723,"names":724},"de",[725],"Ettringit",{"lang":727,"names":728},"es",[721],{"lang":730,"names":731},"eu",[732],"Ettringita",{"lang":734,"names":735},"fa",[736,737,738,739],"اترنجیت","اترنگایت","اترینگایت","هگزاکلسیم آلومینات تری سولفات هیدرات",{"lang":741,"names":742},"fi",[743],"ettringiitti",{"lang":745,"names":746},"fr",[711,7,747,712],"Sel de Candlot",{"lang":749,"names":750},"he",[751],"אטרינגיט",{"lang":753,"names":754},"it",[7],{"lang":756,"names":757},"ja",[758,759],"ウッドフォーダイト","エトリンガイト",{"lang":761,"names":762},"mk",[763],"Етрингит",{"lang":765,"names":766},"nb",[767],"ettringitt",{"lang":769,"names":770},"nl",[771,717],"Candlot zout",{"lang":773,"names":774},"nn",[767],{"lang":776,"names":777},"pl",[778,725],"etryngit",{"lang":780,"names":781},"pt",[782],"etringita",{"lang":784,"names":785},"ru",[786],"Эттрингит",{"lang":788,"names":789},"sms",[767],{"lang":791,"names":792},"sv",[793],"ettringit",{"lang":795,"names":796},"uk",[797],"Еттрингіт",{"lang":799,"names":800},"vi",[7],{"lang":802,"names":803},"zh",[804],"钙矾石","Q420287",{"history":11,"applications":11}]