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Coquandite & Valentinite

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GMN160119

Coquandite & Valentinite

Description Tabs

Description
Locality: 
Baia Sprie Mine, Baia Sprie, Maramureș County, Romania
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 0.8 × 0.5 cm
Description

2 rare minerals from the 70's.
The coquandite forms yellowish balls on altered stibnite surface, and the valentinite forms some nice translucent crystals.

Mineral Data
What's on the rock

Coquandite

Formula: 
Sb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)
Strunz: 
7.DE.35
Crystal System: 
Triclinic
Hardness: 
3.0 - 4.0
Type Locality: 
Lucky Knock Mine (Lawrence Mine), Whitestone Coulee, Tonasket, Okanogan Co., Washington, USA

Valentinite

Formula: 
Sb2O3
Strunz: 
4.CB.55
Hardness: 
2.5 - 3.0
Streak: 
White
Type Locality: 
Les Chalanches Mine, Allemont, Isère, Rhône-Alpes, France

Seller Information

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