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Formula: K2Ca5(SO4)6.H2O
Hydrated normal sulphate
Crystal System: Monoclinic
Specific gravity: 2.90 to 2.93 measured, 2.90 calculated
Hardness: 3½
Colour: Colourless, white, pale yellow, greenish yellow
Environments
Evaporite deposits
Hydrothermal evaporites
Görgeyite is typically an uncommon secondary mineral in
evaporite deposits; it also occurs in hydrothermal veins. In evaporites it is associated with
glauberite, halite,
polyhalite, anhydrite and
gypsum
(HOM).
Localities
At the type locality, the Ischler Salzberg, Perneck, Bad Ischl, Gmunden District, Upper Austria, görgeyite occurs
as thin tabular crystals in an evaporite deposit, associated with glauberite
and minor halite and polyhalite
(AM 39.403).
At the Cesano geothermal field, Metropolitan City of Rome Capital, Lazio, Italy, görgeyite is associated with
cesanite and pyrite
(HOM).
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