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Hochelagaite: (Ca,Na,Sr)Nb4O11·8(H2O)
Comments: White aggregate of small fibrous crystals of hochelagaite in matrix. Location: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mt Saint-Hilaire, Rouville Co., Québec, Canada. Scale: Picture size 4.5 mm. © Thomas Witzke / Abraxas-Verlag