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Synchysite & Pyrite

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SYM214411

Synchysite & Pyrite

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 × 4.5 × 1 cm
Description

One side of specimen has a couple of synchysite-ce crystals with some small white circular crystals. The other side has a rich assortment of rosettes and hexagonal crystals of synchysite-ce coated with pyrite group.

Mineral Data
What's on the rock

Synchysite

Synonym Of: 

Synchysite-(Ce)

Formula: 
Ca(Ce,La)(CO3)2F
Strunz: 
5.BD.20c
Hardness: 
4.5

Synchysite-(Nd)

Formula: 
Ca(Nd,Y,Gd)(CO3)2F
Strunz: 
5.BD.20c
Hardness: 
4.5

Synchysite-(Y)

Formula: 
Ca(Y,Ce)(CO3)2F
Strunz: 
5.BD.20c
Hardness: 
6.0 - 6.5
Group Parent: 
Synchysite Group

Pyrite

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