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Ferrierite-K

Type Locality
Santa Monica Mts, Los Angeles Co., California, USA
Mineral Data
(K2,Na2,Mg,Ca)3-5Mg[Al5-7Si27.5-31O72]·18H2O
Strunz: 
9.GD.50
Physical Properties
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 3.5
Synonyms
Synonyms: 
Ferrierite K and Ferrierite - K