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Cowlesite

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ZLT148543

Cowlesite

Description Tabs

Description
Locality: 
Mjöadalsa, Hvammur, Borgarbyggð, Western Region, Iceland
Size Range: 
Thumbnail (1-3cm)
Size: 
1.1 × 2.9 × 2.5 cm
Description

Basaltic rock sample with a cavity lined with small spheres of cowlesite. Collected in 1978.

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

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