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Villiaumite & Thermonatrite

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BCK682604

Villiaumite & Thermonatrite

David Burgess Collection
Classic Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 3.1 × 3.1 cm
Description

You are bidding on a large sample with large vugs hosting actual crystals of villiaumite instead of the normal cleavage fragments. The crystals are coated with ragged thermonatrite effloresces. Better than the photos and very good for the locality. 

Mineral Data
What's on the rock

Villiaumite

Formula: 
NaF
Strunz: 
3.AA.20
Crystal System: 
Isometric
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Rouma Island (Roume Island; Roma Island; Ruma Island), Los Archipelago (Los Islands), Guinea

Thermonatrite

Formula: 
Na2CO3·H2O
Strunz: 
5.CB.05
Crystal System: 
Orthorhombic
Hardness: 
1.0 - 1.5

Seller Information

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