Bischofite

bischofite

kieserite

halite

carnallite

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Formula: MgCl₂.6H₂O
Normal halide
Crystal System: Monoclinic
Specific gravity: 1.591 to 1.604 measured, 1.5895 calculated
Hardness: 1 to 2
Streak: White
Colour: Colourless to white; colourless in transmitted light
Solubility: Readily soluble in alcohol and in water, deliquescent
Common impurities: Ca,S
Environments

Evaporite deposits

Bischofite occurs in saline deposits, probably in part secondary, and formed by alteration of carnallite. Associated minerals include carnallite, halite and kieserite (HOM).

Localities

At the type locality, the Friedrichshall potash mine, Staßfurt, Salzlandkreis, Saxony-Anhalt, bischofite is associated with kieserite, halite and carnallite (Mindat).

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