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Coquandite

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BCK740360

Coquandite

Kay Robertson collection
Rare Mineral

Description Tabs

Description
Locality: 
Lucky Knock Mine, Tonasket, Okanogan County, Washington, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.6 × 2.1 × 1.1 cm
Description

You are bidding on a small sample with very rich white curly crystals of rare coquandite in cavities in stibnite from this obscure locality. Kay Robertson collection and label. 

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

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