Carletonite

KNa4Ca4Si8O18(CO3)4(OH,F).H2O

This sample of carletonite is displayed in the Smithsonian Museum of Natural History. Carletonite is a mineral that contains fluorine with the composition KNa4Ca4Si8O18(CO3)4(OH,F).H2O. The sample at left is about 6 cm across and is from Mon Saint-Hilaire, Quebec, Canada.

Mindat: Carletonite

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