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Calcite On Marcasite

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PJM39999

Calcite On Marcasite

Description Tabs

Description
Locality: 
Cadjebut Mine, Fitzroy Crossing, Derby-West Kimberley Shire, Western Australia, Australia
Size Range: 
Small cabinet (7-10 cm)
Size: 
3.4 × 7.2 × 5.2 cm
Description

A group of flat calcite rhombs that are relatively clear with white phantoms of calcite, indicating more than one generation of growth.

The calcite group is on a thin bed of marcasite crystals that extends past the calcite crystals on one side and have grown on a dark brown carbonate matrix studded with sphalerite.

Mineral Data
What's on the rock

Calcite

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

Marcasite

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

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