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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
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).
The kuranakhite occurs as rosettes of coarse (2–5 mm) tabular crystals of deep, brilliant blackish red
colour with an orange streak
(Minrec 55.6.843).
Kuranakhite from Moctezuma - Image
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).
Kuranakhite from the Kuranakh ore field -
Image
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).
Kuranakhite from the Otto Mountain -
Image
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