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Bastnäsite-(Ce) & Pyrite

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CFL650415

Bastnäsite-(Ce) & Pyrite

Type Locality

Description Tabs

Description
Locality: 
Poudrette Quarry, Mont Saint-Hilaire, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 8 × 6 cm
Weight: 
325.00gr
Description

Excellent specimen of bastnäsite-(Ce) crystals associated with nicely perched donnayite-(Y) crystals literally covered with tiny pyrite crystals on their top surface.  There are large damaged zircon crystals on the back of the specimen. The largest partially replaced donnayite-(Y) crystal is 8 mm in size.

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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