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Cryolite & Weloganite

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GMN968478

Cryolite & Weloganite

Description Tabs

Description
Locality: 
Francon Quarry, Québec, Canada
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 2.7 × 2.2 cm
Description

A lot of pale yellow, well formed cryolite crystals in the matrix cavity. Associated with weloganite.

This mineral rarely forms crystals from worldwide

From 1975

 

Mineral Data
What's on the rock

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

Weloganite

Formula: 
Na2Sr3Zr(CO3)6·3H2O
Strunz: 
5.CC.05
Hardness: 
3.5
Streak: 
white
Type Locality: 
Francon quarry, Montréal, Québec, Canada

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