Images
Formula: WS2
Sulphide of tungsten,
molybdenite group
Crystal system: Trigonal
Specific gravity: 7.4 measured, 7.732 calculated
Hardness: 2½
Colour: lead-grey
Environments
Sedimentary environments
Fumeroles
Associated minerals include pyrite,
sphalerite, galena,
cinnabar, tetrahedrite,
wolframite, scheelite and
quartz
(HOM).
Localities
At the Angokitsk W Deposit, Buryatia, Russia, tungstenite occurs replacing
scheelite
(HOM).
At the Kudriavy volcano, Iturup Island, Kurilsky District, Kuril Islands, Sakhalin Oblast, Russia, tungstenite
occurs in high-temperature fumaroles
(HOM).
At the type locality, the Emma Mine, Alta, Little Cottonwood Mining District, Salt Lake County, Utah, USA,
tungstenite occurs in a deposit replacing limestone
(HOM).
Tungstenite from the Emma Mine - Image
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