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Formula: Co(SO4).6H2O
Hydrated normal sulphate of cobalt,
hexahydrite group
Crystal System: Monoclinic
Specific gravity: 1.97 to 2.02 measured, 2.006 calculated
Hardness: 2½
Streak: White
Colour: Pink
Solubility: Soluble in water
Environments
Sedimentary environments
Hydrothermal environments
Moorhouseite may occur as dehydration product of bieberite
(Mindat).
Localities
At the type locality, the Walton baryte mine, Walton, Hants county, Nova Scotia, Canada, moorhouseite has been
found as water soluble efflorescences on a 2" x 4" x 8" specimen of sulphides in a
baryte-siderite matrix from a
hydrothermal
lead-zinc-copper
orebody associated with a large baryte deposit. Moorhouseite is closely
associated with aplowite, as well as occurring with
siderite and baryte, and both
moorhouseite and aplowite probably were derived from a
cobaltian-nickelian
pyrite which is an abundant constituent in the deposit
(CM 8.166-171, HOM).
At the Svornost mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic, moorhouseite is
associated with koritnignite,
köttigite and
picropharmacolite
(HOM).
Near Cameron, Cameron Mining District, Coconino County, Arizona, USA, moorhouseite occurs as crusts on
sandstone
(HOM).
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