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Eirikite Gaidonnayite & Horváthite-(Y)

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SYM881569

Eirikite Gaidonnayite & Horváthite-(Y)

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 2 × 1.8 cm
Description

White sprays of eirikite with gaidonnayite crystals covering alot of the specimen and horvathite-y crystals. 

Mineral Data
What's on the rock

Eirikite

Formula: 
KNa6Be2(Si15Al3)O39F2
Strunz: 
9.EH.25
Hardness: 
6.0 - 0.0
Streak: 
White
Type Locality: 
Eudidymite-Epididymite locality, Vesle Arøya, Langesundsfjorden, Larvik, Vestfold, Norway

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

Horváthite-(Y)

Formula: 
NaY(CO3)F2
Strunz: 
5.BD.25
Crystal System: 
Orthorhombic
Hardness: 
4.0
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