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Bastnäsite-(Ce) & Donnayite-(Y)

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CFL809504

Bastnäsite-(Ce) & Donnayite-(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: 
5 × 4 × 3.5 cm
Description

Very good specimen of bastnasite-(Ce) crystals associated with gmelinite-Na, analcime, type locality donnayite-(Y), ankerite, albite, quartz and brookite.  Collected by Gilles Haineault in 2016.

Mineral Data
What's on the rock

Bastnäsite-(Ce)

Formula: 
(Ce,La)(CO3)F
Strunz: 
5.BD.20a
Crystal System: 
Hexagonal
Hardness: 
4.0 - 4.5
Type Locality: 
Bastnäs mines, Riddarhyttan, Skinnskatteberg, Västmanland, Sweden

Donnayite-(Y)

Formula: 
NaCaSr3Y(CO3)6·3H2O
Strunz: 
5.CC.05
Hardness: 
3.0
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

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