Tennantite

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Tennantite is a copper arsenic sulfosalt mineral. Its chemical formula is Cu₁₂As₄S₁₃. It is found in hydrothermal veins and contact metamorphic deposits. A closely related mineral, tetrahedrite (Cu₁₂Sb₄S₁₃) has antimony substituting for arsenic and the two form a solid solution series. The two have very similar properties and is often difficult to distinguish between tennantite and tetrahedrite. Iron, zinc, and silver substitute up to about 15% for the copper site.

The mineral was named after the English chemist Smithson Tennant (1761-1815).

[edit] See also

• Bornite
• Cuprite

[edit] References

• Min. galleries
• Mindat.org