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Bustamite In Calcite

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GND56774

Bustamite In Calcite

Classic Locality

Description Tabs

Description
Locality: 
Zinc Corporation Mine, Broken Hill, Yancowinna County, New South Wales, Australia
Size Range: 
Cabinet (10-18 cm)
Size: 
16.5 × 10 × 6 cm
Largest Crystal: 
2.00cm
Description

A large and attractive specimen for the species. Crystals of brown bustamite are exposed nicely in a matrix of white calcite up to 2 cm long. On the back of the specimen, the associated massive sulphides chalcopyrite and sphalerite are present.

The wieght of the specimen is over 1.3 kg. However postage for this piece is capped at $15 worlwide.

Mineral Data
What's on the rock

Bustamite

Formula: 
CaMn2+(Si2O6)
Strunz: 
9.DG.05
Hardness: 
5.5 - 6.5
Streak: 
White
Type Locality: 
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA

Calcite

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