＜ ＜ ＜Knowledge unit of Minerals ＞ ＞ ＞
Tetrahedrite
Introduction
Physical Properties
Chemical Properties
Occurences
Notable Locality
Major Uses
Diagnostic Features

Diagnostic Features

(1) Tetrahedron crystals

(2) Grayish black color

(3) Metallic luster

          

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