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Hilairite

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
Na2Zr[SiO3]3·3H2O
Strunz: 
9.DM.10
Physical Properties
Hardness: 
4.5