Krennerite

A variety of Minerals

Krennerite specimen - rock identification

What is Krennerite?

Krennerite is an orthorhombic gold telluride mineral which can contain variable amounts of silver in the structure. The formula is AuTe2, but specimen with gold substituted by up to 24% with silver have been found ([Au0.77Ag0.24]Te2). Both of the chemically similar gold-silver tellurides, calaverite and sylvanite, are in the monoclinic crystal system, whereas krennerite is orthorhombic. The color varies from silver-white to brass-yellow. It has a specific gravity of 8.62 and a hardness of 2.5. It occurs in high temperature, hydrothermal environments. Krennerite was discovered in 1878 near the village of Săcărâmb, Romania, and first described by the Hungarian mineralogist Joseph Krenner (1839–1920).

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Krennerite Localities Map

See where Krennerite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

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Quick Facts

Physical Properties

Color
Silver white
Hardness (Mohs)
2 - 3
Density
8.86 g/cm³

Chemical Properties

Chemical Formula
Au3AgTe8
Elements
Ag, Au, Te
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