Tetrahedrite

sulfosalt

hydrothermal

Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13 sulphosalt
Specific gravity: 4.6 to 5.2
Hardness: 3 to 4
Streak: Black
Colour: Steel grey to iron black
Solubility: Slightly soluble in nitric acid
Environments:

Pegmatites (rare)
Carbonatites
Metamorphic environments
Hydrothermal environments (usual)

Tetrahedrite usually occurs in epithermal (low temperature) to mesothermal (moderate temperature) hydrothermal veins, rarely in pegmatites, and also in some contact metamorphic deposits.

Common impurities: Ag,Pb,Zn,Fe,As

Back to Minerals