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Cowlesite

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