(Lab02)_Native_elements,_sulfides,_and_sulfosalts_F10

(Lab02)_Native_elements,_sulfides,_and_sulfosalts_F10 -...

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1 Native Elements, Sulfides, and Sulfosalts GLY 4200 Lab 2 - Fall, 2010
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2 Native Elements The native elements may be divided into metallic, non-metallic, and semi-metallic Native elements are composed of a single element, uncombined with other elements They are often ores, especially the metallic native elements Gold, Silver, Copper, Platinum
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3 Native Element Luster The luster shows distinctive changes from one group to another Metallic group – metallic to dull metallic Semi-metal group – submetallic to dull metallic Non-metallic – various non-metallic lusters
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4 Sulfides A sulfide is a compound between sulfur, or another sulfur group element, and a metallic element Most of these minerals are opaque, and they often have characteristic colors, as well as distinctive streak colors A few are transparent to translucent – examples cinnabar, realgar, and orpiment
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5 Sulfide Formulas The general formula is A m X n where A
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