Görgeyite

gorgeyite

glauberite

polyhalite

anhydrite

Images

Formula: K2Ca5(SO4)6.H2O
Hydrated normal sulphate
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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