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Formula: Cu2+Sn4+(OH)6
Hydroxide, schoenfliesite subgroup,
perovskite supergroup
Crystal System: Isometric
Hardness: 4 to 4½
Colour: Brownish green to malachite-green, yellow-brown
Environments
Pegmatites
Hydrothermal environments
Localities
At the type locality, the Mushiston Deposit, Kaznok Valley, Pendzhikent District, Zeravshan Range, Sughd, Tajikistan,
mushistonite occurs in the oxidised zone of the tin deposit, associated with
varlamoffite, as zoned concentric deposits, replacing
stannite. Associated minerals include
chalcopyrite, sphalerite and
galena as well as stannite and
varlamoffite
(HOM, AM 70.1331).
At the Etta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA, mushistonite occurs in a zoned
pegmatite, associated with
cassiterite, pseudomalachite and
quartz
(HOM).
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