The ore deposits of Utah . C. PHOTOMICROGRAPH OF CRYSTAL OF ZINC SUL-PHIDE IN ORDINARY LIGHT. Enlarged 43 D. PHOTOMICROGRAPH OF CRYSTAL SHOWN IN C,WITH CROSSED NICOLS. Light areas, wurtzite surrounding a center of sphalerite. ORE DEPOSITS. 207 and compounds of arsenic with other metals,notably copper. ANTIMONY MINERALS. Antimony is present in the primary ores asstibnite and in combination with other metals,notably as tetrahedrite and jamcsonite. Thealteration products of stibnite are valentinite,kermesite, or closely allied minerals. Bind-heimite is a common alteration product of o
The ore deposits of Utah . C. PHOTOMICROGRAPH OF CRYSTAL OF ZINC SUL-PHIDE IN ORDINARY LIGHT. Enlarged 43 D. PHOTOMICROGRAPH OF CRYSTAL SHOWN IN C,WITH CROSSED NICOLS. Light areas, wurtzite surrounding a center of sphalerite. ORE DEPOSITS. 207 and compounds of arsenic with other metals,notably copper. ANTIMONY MINERALS. Antimony is present in the primary ores asstibnite and in combination with other metals,notably as tetrahedrite and jamcsonite. Thealteration products of stibnite are valentinite,kermesite, or closely allied minerals. Bind-heimite is a common alteration product of orescontaining both lead and antimony. SILVER MINERALS. The silver of the primary ores occurs inargentite and in several arsenic and antimonycompounds, and to a slight extent in selenidesand tellurides. By far the most abundantsecondary mineral is cerargyrite, though somenative silver and some secondary sulphide andantimony and arsenic compounds are present. GOLD MINERALS. The gold of the primary ores occurs as nativemetal in selenium and tellurium compounds,and in sulphides in an imdetermined native met
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectminesandmineralresou
