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Dawsonite & Cryolite

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CFL828423

Dawsonite & Cryolite

Description Tabs

Description
Locality: 
Francon Quarry, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 7 × 5 cm
Description

Very nice specimens of very small cryolite crystals associated with prismatic dawsonite crystals, up to 5 mm in size, and albite.  Ex-Ecole Polytechnique (University of Montreal) specimen.

Mineral Data
What's on the rock

Dawsonite

Formula: 
NaAlCO3(OH)2
Strunz: 
5.BB.10
Crystal System: 
Orthorhombic
Hardness: 
3.0
Streak: 
White
Type Locality: 
McGill University campus, Montréal, Québec, Canada

Cryolite

Formula: 
Na3[AlF6]
Strunz: 
3.CB.15
Crystal System: 
Monoclinic
Hardness: 
2.5
Streak: 
White
Type Locality: 
Ivigtut Cryolite deposit, Ivittuut (Ivigtut), Arsuk Fjord, Sermersooq, Greenland

Seller Information

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