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Thermonatrite Franconite & Rhodochrosite

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SYM178645

Thermonatrite Franconite & Rhodochrosite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 0.6 × 1 cm
Description

White masses of thermonatrite with francoite balls on rhodochrosite.

Mineral Data
What's on the rock

Thermonatrite

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

Franconite

Formula: 
Na2Nb4O11·9H2O
Strunz: 
4.FM.15
Crystal System: 
Monoclinic
Hardness: 
4.0
Type Locality: 
Francon quarry, Montréal, Québec, Canada

Rhodochrosite

Formula: 
MnCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Cavnic Mine (Kapnikbánya), Cavnic (Kapnic; Kapnik), Maramureș Co., Romania