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3\u003C\u002Fsub>Si(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>6\u003C\u002Fsub>·12H\u003Csub>2\u003C\u002Fsub>O ","Ca\u003Csub>3\u003C\u002Fsub>Si(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>(OH)\u003Csub>6\u003C\u002Fsub> · 12H\u003Csub>2\u003C\u002Fsub>O",[18,19,20,21,22],"Ca","Si","O","S","H",[18,19,20,21,22],[25],"APPROVED",2011,2012,"7","D","G","15","Hexagonal",16,108,"0","11.1548","10.5702",3,1139.04,2,"Snow-white radiating and random aggregates  of hair-like subparallel clusters to 0.2 mm.",2.5,"1.92","1.93","Vitreous,Silky","vitreous in separate crystals and silky in aggregates","Transparent","Colorless, white",[50,51],"colorless","white","None Observed","Irregular\u002FUneven","brittle","Uniaxial","-","1.490","1.477",1.477,1.49,"Late hydrothermal assemblage related to alkali olivine basalt.","Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4102\u002F1.","Closely related to hielscherite.","Named for the community Kottenheim, located near Mayen and the Bellerberg volcano, Germany.","2025-08-11 12:15:09",[],[68,77,84,89,97,104,111,118,123,130,140,146,154,161],{"id":69,"name":70,"entrytype":9,"csystem":71,"ima_formula":72,"mindat_formula":73,"hmin":40,"hmax":40,"dmeas":74,"dcalc":75,"primary_image_id":76},627,"Bentorite","Trigonal","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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Germany",50.3525167,7.2334972,"Germany",[179,183,187,191],{"id":180,"year":26,"html":181,"doi":182},244172,"Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2011, CNMNC Newsletter No. 10. \u003Ci>Mineralogical Magazine\u003C\u002Fi>,  75 (5) 2549-2561 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1180\u002Fminmag.2011.075.5.2549'>doi:10.1180\u002Fminmag.2011.075.5.2549\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Fuploads\u002FMM75_2549.pdf' class='refpdflink'>\u003C\u002Fa>","10.1180\u002Fminmag.2011.075.5.2549",{"id":184,"year":27,"html":185,"doi":186},64971,"Chukanov, N. V., Britvin, S. N., Van, K. V., Mockel, S., Zadov, A. E. (2012) Kottenheimite, Ca\u003Csub>3\u003C\u002Fsub>Si(OH)\u003Csub>6\u003C\u002Fsub>(SO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>·12H\u003Csub>2\u003C\u002Fsub>O, a new member of the ettringite group from the Eifel area, Germany. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  50 (1) 55-63 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.3749\u002Fcanmin.50.1.55'>doi:10.3749\u002Fcanmin.50.1.55\u003C\u002Fa> \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FCM50_55.pdf' class='refpdflink'>\u003C\u002Fa>","10.3749\u002Fcanmin.50.1.55",{"id":188,"year":189,"html":190,"doi":11},16965378,2014,"(2014) Kottenheimite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fkottenheimite.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":192,"year":193,"html":194,"doi":11},16138948,2018,"Campostrini, Italo, Di Domenico, Dario, Demartin, Francesco., Russo, Massimo. (2018) Kottenheimite,Ca3Si(SO4)2(OH)6 .12H2 0, della cava Montenero di Onano (Viterbo,Lazio): secondo ritrovamento mondiale. [Kottenheimite, Ca3Si(SO4) 2(OH)6∙12H2O, from the Montenero quarry of Onano (Viterbo, Lazio): second world discovery]. \u003Ci>Micro (Associazione Micromineralogica Italiana)\u003C\u002Fi>,  16 (1). 38-43",[196],{"id":197,"source_url":198,"license_code":199,"credit_html":200,"title":201,"description":202,"author":203,"original_width":204,"original_height":205},13596,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=80205595","CC BY-SA 3.0","Leon Hupperichs, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=80205595\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Kottenheimite-607206.jpg","White acicular and fibrous kottenheimite. Analyzed sample from the Bernd Ternes collection. From: Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany.","Leon Hupperichs",976,875,[207],{"id":208,"url":209,"label":210,"formula":211,"spacegroup":212,"year":27},7271,"\u002Fcif\u002F7271.cif","Chukanov 2012","Ca3 Si S1.82 O25.66 H30","P 63\u002Fm",[214,215],"IMA2011-038","Kottenheimiet",[217,221,226,230],{"lang":218,"names":219},"ca",[220],"kottenheimita",{"lang":222,"names":223},"de",[224,225],"IMA 2011-038","Kottenheimit",{"lang":227,"names":228},"eu",[229],"Kottenheimita",{"lang":231,"names":232},"it",[233],"kottenheimite","Q19860912",{"history":11,"applications":11}]