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Date: 2007-09-30 02:47:32Precious metals Chemical elements Noble metals Transition metals Osmiridium Platinum group Ruthenium Osmium Sperrylite Matter Chemistry Periodic table | Rutheniridosmine (Ir, Os, Ru)Add to Reading ListSource URL: www.handbookofmineralogy.orgDownload Document from Source WebsiteFile Size: 56,26 KBShare Document on Facebook |