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Colemanite & Orpiment

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SHS20074

Colemanite & Orpiment

Description Tabs

Description
Locality: 
U S Borax Mine, Boron, Kern County, California, United States of America
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 7 × 5.2 cm
Largest Crystal: 
0.60cm
Description

Colemanite crystals with orpiment

Mineral Data
What's on the rock

Colemanite

Formula: 
Ca[B3O4(OH)3]·H2O
Strunz: 
6.CB.10
Hardness: 
4.5
Type Locality: 
Furnace Creek District (Furnace Creek Borate District; Death Valley Area Borate Deposits; Ryan area), Inyo Co., California, USA

Orpiment

Formula: 
As2S3
Strunz: 
2.FA.30
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0