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Boothite Chalcanthite & Gypsum

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BCK201010

Boothite Chalcanthite & Gypsum

Type Locality

Description Tabs

Description
Locality: 
Alma Mine, Leona Heights, Oakland, Alameda County, California, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1 × 1.2 cm
Description

You are bidding on a small matrix specimen with some tiny needle groups of very rare boothite on chalcanthite with some gypsum. A very rare type locality specimen!

Mineral Data
What's on the rock

Boothite

Formula: 
CuSO4·7H2O
Strunz: 
7.CB.35
Hardness: 
2.0 - 2.5
Type Locality: 
Alma Mine (Alma Pyrite Mine), Leona Heights deposit, Leona Heights, Oakland, Oakland Hills, Diablo Range, Alameda Co., California, USA

Chalcanthite

Formula: 
CuSO4·5H2O
Strunz: 
7.CB.20
Crystal System: 
Triclinic - Pinacoidal
Hardness: 
2.5
Streak: 
White
Type Locality: 
Chuquicamata Mine, Chuquicamata District, Calama, El Loa Province, Antofagasta Region, Chile

Gypsum

Formula: 
CaSO4·2H2O
Strunz: 
7.CD.40
Hardness: 
2.0
Streak: 
White.

Seller Information

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