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Marcasite Weloganite Baryte & Dawsonite

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SYM664206

Marcasite Weloganite Baryte & Dawsonite

Rare Mineral

Description Tabs

Description
Locality: 
Francon Quarry, Québec, Canada
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.3 × 1.5 cm
Description

Fine specimen of marcasite with nice crystals of weloganite and what I believe to be baryte.

Mineral Data
What's on the rock

Marcasite

Formula: 
FeS2
Strunz: 
2.EB.10a
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 6.5

Weloganite

Formula: 
Na2Sr3Zr(CO3)6·3H2O
Strunz: 
5.CC.05
Hardness: 
3.5
Streak: 
white
Type Locality: 
Francon quarry, Montréal, Québec, Canada

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White

Dawsonite

Formula: 
NaAlCO3(OH)2
Strunz: 
5.BB.10
Crystal System: 
Orthorhombic
Hardness: 
3.0
Streak: 
White
Type Locality: 
McGill University campus, Montréal, Québec, Canada