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Gerstleyite
Type Locality
Baker mine, U.S. Borax Mine (Pacific West Coast Borax; Pacific Coast Borax Co.; Boron Mine; U.S. Borax and Chemical Corp.; Kramer Mine; Baker Mine), Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA
Mineral Data
Na
2
(Sb,As)
8
S
13
·2H
2
O
Strunz:
2.HE.05
Physical Properties
Crystal System:
Orthorhombic
Hardness:
2.5
Tenacity:
brittle
