Dzharkenite

dzharkenite

ferroselite

metacinnabar

tiemannite

Images

Formula: FeSe2
Selenide, pyrite group, paramorph of ferroselite
Crystal System: Isometric
Specific gravity: 7.349 calculated
Hardness: 5
Streak: Black
Colour: Black
Environments

Sedimentary environments
Hydrothermal environments

Localities

At the type locality, the Suluchekinskoye Se-U deposit, Dzharkenskaya Depression, Middle Ili River, Almaty Region, Kazakhstan, dzharkenite occurs as octahedral crystals, sometimes modified by the dodecahedron, in selenium-uranium ores in quartz-sandstone. It forms intergrowths with goethite, ferroselite, and an unnamed selenide of copper, cobalt, nickel and iron (AM 81.1013-1017, Mindat).

At the Zapadno-Ozernoye Cu deposit, Uchalinsky District, Bashkortostan, Russia, dzharkenite occurs in a massive sulphide deposit, associated with pyrite, galena, tetrahedrite, metacinnabar, tiemannite, sulphur, gold and selenium (HOM).

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