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Probertite

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CAM141707

Probertite

Description Tabs

Description
Locality: 
Kohnstein Quarry, Niedersachswerfen, Nordhausen District, Thuringia, Germany
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 5 × 3.3 cm
Largest Crystal: 
1.50cm
Description

A large cluster of intergrown, lustrous, colourless probertite crystals up to 1.5 cm on a grey anhydrite matrix.
A very fine example of this uncommon borate.

Mineral Data
What's on the rock

Probertite

Formula: 
NaCaB5O7(OH)4·3H2O
Strunz: 
6.EB.15
Hardness: 
3.5
Streak: 
White
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
Cartils Minerals

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