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Carletonite & Arfvedsonite

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SYM758809

Carletonite & Arfvedsonite

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 0.7 × 0.5 cm
Description

Carletonite with arfvedsonite crystals. 

Mineral Data
What's on the rock

Carletonite

Formula: 
KNa4Ca4Si8O18(CO3)4(OH,F)·H2O
Strunz: 
9.EB.20
Crystal System: 
Tetragonal
Hardness: 
4.0 - 4.5
Streak: 
White
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

Arfvedsonite

Formula: 
[Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
Strunz: 
9.DE.25
Hardness: 
5.0 - 6.0
Type Locality: 
Kangerluarsuk Fjord (Kangerdluarssuq Fjord), Ilímaussaq complex, Narsaq, Kujalleq, Greenland