Tennantite

（重定向自Gray copper ore）

Tennantite is a copper arsenic sulfosalt mineral with an ideal formula Cu₁₂As₄S₁₃. Due to variable substitution of the copper by iron and zinc the formula is Cu₆[Cu₄(Fe,Zn)₂]As₄S₁₃. It is gray-black, steel-gray, iron-gray or black in color. 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.

单词	Gray copper ore
释义	Gray copper ore 英语百科 Tennantite （重定向自Gray copper ore） Tennantite is a copper arsenic sulfosalt mineral with an ideal formula Cu₁₂As₄S₁₃. Due to variable substitution of the copper by iron and zinc the formula is Cu₆[Cu₄(Fe,Zn)₂]As₄S₁₃. It is gray-black, steel-gray, iron-gray or black in color. 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.
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