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Brassite
Type Locality
Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic
Mineral Data
Mg(HAsO
4
)·4H
2
O
Strunz:
8.CE.15
Physical Properties
Colour:
White
Crystal System:
Orthorhombic
Streak:
White
Hardness:
0.0
Tenacity:
brittle
