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Formula: Au3AgTe8
Telluride, closely related to calaverite
Crystal System: Orthorhombic
Specific gravity: 8.62 measured, 8.86 calculated
Hardness: 2 to 3
Streak: Greenish grey
Colour: Silver white
Common impurities: Fe
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).
At the Emperor Mine, Vatukoula, Vatukoula Gold Field, Viti Levu, Fiji, small sharp krennerite crystals occur in and on native
gold
(R&M 96.3.207).
At the type locality, Săcărâmb, Deva, Hunedoara, Romania, small specimens of gold associated
with krennerite have been collected
(R&M 96.3.207).
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).
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