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Date: 2007-09-30 00:49:18Natural resources Todorokite Cryptomelane Birnessite Ojuela Sterling Hill Mining Museum Chemistry Matter Oxide minerals | (Zn, Fe2+, Mn2+)Mn:+07· ChalcophaniteAdd to Reading ListSource URL: www.handbookofmineralogy.orgDownload Document from Source WebsiteFile Size: 142,59 KBShare Document on Facebook |