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5H\u003Csub>2\u003C\u002Fsub>O",[18,19,20,21],"As","Fe","O","H",[18,19,20,21],[18],"20.9.4",[26,27],"APPROVED","GRANDFATHERED","1924","8","C","E","40","42","10","1","Monoclinic","0","Class and space group unknown","Small irregular masses with a fibrous structure.","Finely fibrous.",2.5,"2.885","Best measurement from a probable mixture","Sub-Vitreous,Resinous","Transparent","Dark amber-brown, yellow-brown, yellow",[48,49],"brown","yellow","Fibrous","brittle","Biaxial","1.650","Weak","n = 1.650","Parallel to elongation","Royal Ontario Museum, Toronto, Canada, M14248; Harvard University, Cambridge, Massachusetts, 101313; National Museum of Natural History, Washington, D.C., USA, 95461.","Can be considered an oxidised symplesite\u002Fparasymplesite.","Named by Thomas Leonard Walker and Alfred Leonard Parsons in 1924  for its relation to symplesite.","2025-08-11 12:14:20",[],[63,69],{"id":64,"name":65,"entrytype":9,"csystem":66,"ima_formula":67,"mindat_formula":68,"hmin":11,"hmax":11,"dmeas":37,"dcalc":11,"primary_image_id":11},2678,"Metaköttigite","Triclinic","(Zn,Fe\u003Csup>3+\u003C\u002Fsup>)\u003Csub>3\u003C\u002Fsub>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> &middot; 8(H\u003Csub>2\u003C\u002Fsub>O,OH)","(Zn,Fe,Fe)\u003Csub>3\u003C\u002Fsub>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>&middot;8(H\u003Csub>2\u003C\u002Fsub>O,OH)",{"id":70,"name":71,"entrytype":9,"csystem":66,"ima_formula":72,"mindat_formula":73,"hmin":41,"hmax":41,"dmeas":74,"dcalc":75,"primary_image_id":76},3851,"Symplesite","Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>3\u003C\u002Fsub>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub> &middot; 8H\u003Csub>2\u003C\u002Fsub>O","Fe\u003Csup>2+\u003C\u002Fsup>\u003Csub>3\u003C\u002Fsub>(AsO\u003Csub>4\u003C\u002Fsub>)\u003Csub>2\u003C\u002Fsub>&middot;8H\u003Csub>2\u003C\u002Fsub>O","2.96","3.02",23407,[],[],[80],{"id":81,"txt":82,"latitude":83,"longitude":84,"country":85},9965,"Hudson Bay Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada",47.4041667,-79.6847222,"Canada",21,[88,92,95,99,103,107],{"id":89,"year":90,"html":91,"doi":11},16109214,1924,"WALKER, T.L. & PARSONS, A.L. (1924): The arsenates of cobalt, nickel and iron observed in silver-bearing veins at Cobalt, Ontario. University of Toronto, Geology Series, Contributions to Canadian Mineralogy 17, 13-17. (Abstracted in",{"id":93,"year":90,"html":94,"doi":11},16109218,"WALKER, T.L. & PARSONS, A.L. (1924): The arsenates of cobalt, nickel and iron observed in silver-bearing veins at Cobalt, Ontario. University of Toronto, Geology Series, Contributions to Canadian Mineralogy 17, 13-17. (Abstracted in  American Mineralogist (1925): 10: 134)",{"id":96,"year":97,"html":98,"doi":11},16109215,1925,"American Mineralogist (1925): 10: 134)",{"id":100,"year":101,"html":102,"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":104,"year":105,"html":106,"doi":11},17201498,1979,"Walenta, K. (1979) Die Sekundärmineralien der Erzgänge von Neubulach im nördlichen Schwarzwald [The secondary minerals of the ore veins of Neubulach in the northern Black Forest]. \u003Ci>Der Aufschluss\u003C\u002Fi>,  30 (7). 213-252",{"id":108,"year":109,"html":110,"doi":11},16964268,2005,"(2005) Ferrisymplesite. \u003Ci>Handbook of Mineralogy\u003C\u002Fi>. Mineralogical Society of America \u003Ca target='_blank' href='https:\u002F\u002Fwww.handbookofmineralogy.org\u002Fpdfs\u002Fferrisymplesite.pdf' class='refpdflink'>\u003C\u002Fa>",[112],{"id":113,"source_url":114,"license_code":115,"credit_html":116,"title":117,"description":118,"author":119,"original_width":120,"original_height":121},8651,"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=130450481","CC BY 4.0","Henk Smeets – tomeikminerals.com, via \u003Ca href=\"https:\u002F\u002Fcommons.wikimedia.org\u002F?curid=130450481\" rel=\"noopener\">Wikimedia Commons\u003C\u002Fa>","Ferrisymplesite7783.jpg","\u003Ca href=\"https:\u002F\u002Fen.wikipedia.org\u002Fwiki\u002FFerrisymplesite\" class=\"extiw\" title=\"en:Ferrisymplesite\">Ferrisymplesite\u003C\u002Fa>\n\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>\u003Cdl>\u003Cdd>Field of view: crystal width 0.3 mm\u003C\u002Fdd>\n\u003Cdd>Locality: Genna zinc smelter, Letmathe, North Rhine-Westphalia, Germany\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>\u003C\u002Fdd>\u003C\u002Fdl>","Henk Smeets – tomeikminerals.com",1920,1239,[],[124,125],"Ferrisymplesiet","Ferrisymplesita",[127,131,135,139],{"lang":128,"names":129},"ca",[130],"ferrisimplesita",{"lang":132,"names":133},"de",[134],"Ferrisymplesit",{"lang":136,"names":137},"eu",[138],"Ferrisimplesita",{"lang":140,"names":141},"it",[7],"Q3743198",{"history":11,"applications":11}]