Minerals identify

Know how to recognize them

Petzite

Telluride mineral

The mineral petzite, Ag 2, is a soft, steel-gray telluride mineral generally deposited by hydrothermal activity. It forms isometric crystals, and is usually associated with rare tellurium, mercury.

The name comes from chemist W. Petz, who first analyzed the mineral from the type locality in Săcărâmb, Transylvania in 1845. It was described by Wilhelm Karl Ritter von Haidinger in 1845 and dedicated to W. Petz who had carried out the first analyses.

It occurs with other tellurides in vein gold deposits. It is commonly associated with native gold, hessite , sylvanite, altaite, frohbergite, vulcanite

Petzite forms together with uytenbogaardtite (Ag3AuS2) and fischesserite (Ag3AuSe2) the uytenbogaardtite group.

Identification

Color of mineral

Grey
Iron
Black
Bronze
Yellow
White

Mohs scale ( mineral hardness )

2.5

The streak

Black

Luster ( interacts light )

Metallic

Crystal ( diaphaneity )

Cubic