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enargite |
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enargite [e′när‚jīt] (mineralogy) A lustrous, grayish-black mineral which is found in orthorhombic crystals but is more commonly columnar, bladed, or massive; hardness is 3 on Mohs scale, specific gravity is 4.44; in some places enargite is a valuable copper ore. Also known as clairite; luzonite. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Most environmental arsenic occurs naturally, appearing in deposits of minerals and ores including arsenopyrite, enargite, and proustite. At the base of this alunite layer semi-oxidized tetrahedrite and enargite with associated arsenic oxide were located near a 770 ppb gold-in-soil anomaly. Sulphides present include tetrahedrite, argentite and enargite. |
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