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Carletonite & Steacyite

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SYM135345

Carletonite & Steacyite

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 2 × 1 cm
Description

Very aesthetic carletonite crystals with several dark brown steacyite cubes.

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

Steacyite

Formula: 
(◻,K)(Na,Ca)2(Th,U)[Si8O20]
Strunz: 
9.CH.10
Hardness: 
5.0
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