Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy
quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire,
Rouville RCM, Montérégie, Québec, Canada
© Rob Lavinsky
Formula: KNa4Ca4Si8O18(CO3)4(OH,F).H2O
System:    Tetragonal   
Colour:    Colourless, light blue, ...
Lustre:    Vitreous   
Hardness: 4 - 4½
Name: Named after Carleton University, Ottawa, Canada, where it was first studied.

Type Occurrence of Carletonite

Type Locality:    Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, Rouville RCM, Montérégie, Québec, Canada
Year of Discovery:    1971

Physical Properties of Carletonite

Lustre:    Vitreous
Colour:    Colourless, light blue, dark blue, or pink
Streak:    White
Hardness (Mohs):    4 - 4½

Chemical Properties of Carletonite

Formula: KNa4Ca4Si8O18(CO3)4(OH,F).H2O
Essential elements: C, Ca, H, K, Na, O, Si
All elements listed in formula:    C, Ca, F, H, K, Na, O, Si
Common Impurities: Ti,Al,Mg

Photo :

This sample of carletonite is displayed in the Smithsonian Museum of Natural History.
The sample at left is about 6 cm across and is from Mon Saint-Hilaire, Quebec, Canada.

Mont St Hilaire, Quebec, Canadathumbnail, 0.9 x 0.8 x 0.7 cm
More Info : Mindat: Carletonite

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