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Gaidonnayite & Franconite

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SYM829294

Gaidonnayite & Franconite

Rare Mineral

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 2.5 × 2.5 cm
Description

Very nice fluorescent (SW) large gaidonnayite crystals with spheres of franonite on matrix. 

Mineral Data
What's on the rock

Gaidonnayite

Formula: 
Na2Zr(Si3O9)·2H2O
Strunz: 
9.DM.15
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 0.0
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

Franconite

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