Krennerite

calaverite

coloradoite

Formula: Au3AgTe8
Telluride, dimorph of calaverite
Specific gravity: 8.62
Hardness: 2 to 3
Streak: Greenish grey
Colour: Silver white
Environments:

Hydrothermal environments

Krennerite is found in hydrothermal gold-tellurium deposits with other tellurides (Webmin, HOM). Associated minerals include calaverite, coloradoite, sylvanite, petzite, hessite, tellurium, gold, pyrite and quartz (HOM).

Localities At the South Kalgurli mine, Kalgoorlie-Boulder, Western Australia, krennerite has been found in association with calaverite (AJM 18.1.13).

The type locality is Săcărâmb, Deva, Hunedoara, Romania.

At the Cripple Creek mining district, Teller county, Colorado, USA, krennerite is sometimes intergrown with calaverite and embedded in celestine on pyritic quartz gangue (Minrec 36.2.173).

Common impurities: Fe

Back to Minerals