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Calcite

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Calcite

Description Tabs

Description
Locality: 
Gunnedah Colliery, Gunnedah, Pottinger County, New South Wales, Australia
Size Range: 
Cabinet (10-18 cm)
Size: 
12.5 × 7.1 × 3.5 cm
Description

A rather nice cabinet sized specimen of lustrous white calcite crystals on a contrasting black shale matrix. Unusual location. I have never seen specimens from here before but they may be more locally common.

The crystals are quite thin rhombehedrons rather than blocky and atain a size of approx. 5 mm on average.

Mineral Data
What's on the rock

Calcite

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