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He published many books and articles for the general public.\r\n","2025-08-11 12:14:20",[],[61,68,75,80,88,95,101],{"id":62,"name":63,"entrytype":9,"csystem":36,"ima_formula":64,"mindat_formula":64,"hmin":65,"hmax":65,"dmeas":41,"dcalc":66,"primary_image_id":67},291,"Argentopentlandite","Ag(Fe,Ni)\u003Csub>8\u003C\u002Fsub>S\u003Csub>8\u003C\u002Fsub>",3.5,"4.66",1824,{"id":69,"name":70,"entrytype":9,"csystem":36,"ima_formula":71,"mindat_formula":71,"hmin":42,"hmax":72,"dmeas":41,"dcalc":73,"primary_image_id":74},1097,"Cobaltpentlandite","Co\u003Csub>9\u003C\u002Fsub>S\u003Csub>8\u003C\u002Fsub>",4.5,"5.22",6016,{"id":76,"name":77,"entrytype":9,"csystem":36,"ima_formula":78,"mindat_formula":78,"hmin":11,"hmax":11,"dmeas":11,"dcalc":79,"primary_image_id":11},52582,"Oberthürite","Rh\u003Csub>3\u003C\u002Fsub>Ni\u003Csub>32\u003C\u002Fsub>S\u003Csub>32\u003C\u002Fsub>","5.195",{"id":81,"name":82,"entrytype":9,"csystem":36,"ima_formula":83,"mindat_formula":84,"hmin":65,"hmax":42,"dmeas":85,"dcalc":86,"primary_image_id":87},3155,"Pentlandite","(Ni,Fe)\u003Csub>9\u003C\u002Fsub>S\u003Csub>8\u003C\u002Fsub>","(Ni\u003Csub>x\u003C\u002Fsub>Fe\u003Csub>y\u003C\u002Fsub>)\u003Csub>Σ9\u003C\u002Fsub>S\u003Csub>8\u003C\u002Fsub>","4.6","4.956",30426,{"id":89,"name":90,"entrytype":9,"csystem":36,"ima_formula":91,"mindat_formula":92,"hmin":42,"hmax":42,"dmeas":41,"dcalc":93,"primary_image_id":94},3628,"Shadlunite","(Fe,Cu)\u003Csub>8\u003C\u002Fsub>(Pb,Cd)S\u003Csub>8\u003C\u002Fsub>","(Pb,Cd)(Fe,Cu)\u003Csub>8\u003C\u002Fsub>S\u003Csub>8\u003C\u002Fsub>","4.72",22155,{"id":96,"name":97,"entrytype":9,"csystem":98,"ima_formula":99,"mindat_formula":99,"hmin":11,"hmax":11,"dmeas":41,"dcalc":100,"primary_image_id":11},29106,"Sugakiite","Tetragonal","Cu(Fe,Ni)\u003Csub>8\u003C\u002Fsub>S\u003Csub>8\u003C\u002Fsub>","4.71",{"id":102,"name":103,"entrytype":9,"csystem":36,"ima_formula":11,"mindat_formula":104,"hmin":11,"hmax":11,"dmeas":11,"dcalc":105,"primary_image_id":11},471480,"Wangyanite","PdNi\u003Csub>8\u003C\u002Fsub>S\u003Csub>8\u003C\u002Fsub>","5.14",[107],{"id":108,"name":109,"entrytype":9,"csystem":98,"ima_formula":110,"mindat_formula":110,"hmin":111,"hmax":65,"dmeas":112,"dcalc":113,"primary_image_id":11},1409,"Eskebornite","CuFeSe\u003Csub>2\u003C\u002Fsub>",3,"5.35","5.44",[],[116],{"id":117,"txt":118,"latitude":119,"longitude":120,"country":121},1731,"Chaméane Uranium Deposit, Le Vernet-Chaméane, Issoire, Puy-de-Dôme, Auvergne-Rhône-Alpes, France",45.5130216,3.4513807,"France",13,[124,128,132,135],{"id":125,"year":126,"html":127,"doi":11},17063051,1973,"Hall, S. R., Stewart, J. M. (1973) The crystal structure of argentian pentlandite (Fe,Ni)\u003Csub>8\u003C\u002Fsub>AgS\u003Csub>8\u003C\u002Fsub>, compared with the refined structure of pentlandite (Fe,Ni)\u003Csub>9\u003C\u002Fsub>S\u003Csub>8\u003C\u002Fsub>. \u003Ci>The Canadian Mineralogist\u003C\u002Fi>,  12 (3) 169-177 \u003Ca target='_blank' href='https:\u002F\u002Frruff.info\u002Frruff_1.0\u002Fuploads\u002FCM12_169.pdf' class='refpdflink'>\u003C\u002Fa>",{"id":129,"year":28,"html":130,"doi":131},7741711,"Johan, Z.; Picot, P.; Ruhlmann, F. (1982) Evolution paragénétique de la minéralisation uranifère de Chaméane (Puy-de-Dôme), France: chaméanite, geffroyite et giraudite, trois séléniures nouveaux de Cu, Fe, Ag et As. \u003Ci>TMPM Tschermaks Mineralogische und Petrographische Mitteilungen\u003C\u002Fi>,  29 (3). 151-167 \u003Ca target='_blank' href='https:\u002F\u002Fdoi.org\u002F10.1007\u002Fbf01084639'>doi:10.1007\u002Fbf01084639\u003C\u002Fa>","10.1007\u002Fbf01084639",{"id":133,"year":28,"html":134,"doi":11},15937640,"Fleischer, M., Cabri, L.J., Chao, G.Y., Mandarino, J.A., Pabst, A. (1982) New mineral names. American Mineralogist: 67: 1074-1082.",{"id":136,"year":137,"html":138,"doi":11},16964532,2005,"(2005) Geffroyite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fgeffroyite.pdf' class='refpdflink'>\u003C\u002Fa>",[140],{"id":141,"source_url":142,"license_code":143,"credit_html":144,"title":145,"description":146,"author":147,"original_width":148,"original_height":149},9726,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=120178064","CC BY-SA 4.0","David Hospital, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=120178064\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Geffroyite.jpg","Silvery metallic crystal aggregates of the very rare Cu-Fe-Ag selenide geffroyite from the famous Moctezuma mine in  Mexico famous for its Te minerals. Curiously this one is not a telluride but a selenide. Ex Vandenbroucke Museum collection from Waregem, Belgium.","David Hospital",707,533,[],[152,153],"Geffroyiet","IMA1980-090",[155,159,164,168,171],{"lang":156,"names":157},"ca",[158],"geffroyita",{"lang":160,"names":161},"de",[162,163],"Geffroyit","IMA 1980-090",{"lang":165,"names":166},"eu",[167],"Geffroyita",{"lang":169,"names":170},"it",[7],{"lang":172,"names":173},"zh",[174],"盖硒铜矿","Q3759213",{"history":11,"applications":11}]