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Monteregianite-(Y)

Type Locality
Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
Mineral Data
(Na,K)6(Y,Ca)2Si16O38·10H2O
Strunz: 
9.EB.15
Physical Properties
Hardness: 
3.5
Synonyms
Synonyms: 
Monteregianite-Y, Monteregianite Y and Monteregianite - Y
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