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Galena Calcite & Pyrite On Sphalerite

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PJM38654

Galena Calcite & Pyrite On Sphalerite

Description Tabs

Description
Locality: 
Goongewa Mine, Fitzory Crossing, Derby-West Kimberley Shire, Western Australia, Australia
Size Range: 
Cabinet (10-18 cm)
Size: 
3.8 × 10.6 × 8.5 cm
Description

A large domed cluster of sphalerite crystals has been richly coated with pyrite crystals and subsequently galena and calcite crystals hace grown on the pyrite.

The calcite and galena have been partly etched by the action of groundwater. Specimen weighs 770 grams

Mineral Data
What's on the rock

Galena

Formula: 
PbS
Strunz: 
2.CD.10
Crystal System: 
Isometric
Hardness: 
2.5
Colour: 
Lead-grey
Streak: 
Lead-grey

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Pyrite

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

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0
Earthstones Australia

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