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Cowlesite & Smectite Group

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BCK615148

Cowlesite & Smectite Group

Description Tabs

Description
Locality: 
Big Tree Creek, Yacolt, Clark County, Washington, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 1.1 × 1.3 cm
Description

You are bidding on a large amygdule of iron rich smectite with very nice clusters of cowlesite crystals. 

Mineral Data
What's on the rock

Cowlesite

Formula: 
CaAl2Si3O10·6H2O
Strunz: 
9.GG.05
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Neer Road, Goble, Columbia Co., Oregon, USA

Seller Information

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