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Name: |
tetrahedrite |
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Class: |
Sulfides |
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Chemistry: |
Cu12Sb4S13 Mixed Copper/Antimony Sulfide |
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Color(s): |
steely gray to flat black, metallic, gray streak |
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Hardness: |
3 - 4 |
SpecGrav: |
4.6 - 5.1 |
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Fracture: |
conchoidal |
Cleavage: |
none |
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Crystal: |
Isometric (predominantly in tetrahedron) often inter grown masses |
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Envronment: |
common copper minerals they form in mesothermal and epithermal veins, they also form with carbonatites, and in hydrothermal deposits. |
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Association: |
galena, quartz, pyrite, chalcopyrite, bornite |
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Locals: |
| Germany | Mexico | British Columbia | Idaho, Colorado, Utah, USA | Peru | |
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Misc: |
The name is derived from its crystal habit, being predominantly tetrahedral . It is soluble in nitric acid and aqua regia |
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Photos |
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1.) Pachapaqui, Peru |
3.) Pachapaqui, Peru |
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