Kuranakhite

kuranakhite

altaite

calaverite

altaite

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Formula: PbMn4+Te6+O6
Oxide, manganese and tellurium bearing mineral
Crystal System: Orthorhombic
Specific gravity: 6.72 measured, 6.66 calculated
Hardness: 4 to 5
Streak: Brown
Colour: Pale brown to nearly black
Solubility: Soluble in hot concentrated HCl or aqua regia (AM 61.339)
Environments

Hydrothermal environments

Localities

At the Ashley Mine, Bannockburn Township, Timiskaming District, Ontario, Canada, kuranakhite is associated with gold (HOM).

At the Jialu Mine, Luonan County, Shangluo, Shaanxi, China, kuranakhite occurs in the oxidised zone of a gold quartz deposit associated with gold, calaverite, pyrite, galena, chalcopyrite, sphalerite, altaite, cerussite, anglesite, pyromorphite and quartz (HOM).

At the Moctezuma Mine, Moctezuma, Moctezuma Municipality, Sonora, Mexico, kuranakhite is associated with cuzticite, eztlite, emmonsite, schmitterite and pyrite (HOM).

At the type locality, the Kuranakh ore field, Aldan, Sakha Republic, Russia, kuranakhite occurs in quartz-limonite and quartz-hematite ores of the oxidation zone of the gold deposit. Associated minerals include gold, electrum and hydrous ferric oxides. Most grains are 0.002 to 0.004 mm in size (AM 61.339).

At Otto Mountain, Baker, Soda Mountains, Silver Lake Mining District, San Bernardino county, California, USA, kuranakhite is found rarely in quartz veins, as small, dark grey to black, flat-lying crystals on quartz (R&M 86.2.132).

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