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Sturtite On Kutnohorite & Calcite

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PJM104193

Sturtite On Kutnohorite & Calcite

Description Tabs

Description
Locality: 
North Mine, Broken Hill, Yancowinna County, New South Wales, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3.6 × 2.2 cm
Description

A hemisphere of calcite var manganoan is covered with a coating of dark brown sturtite and to one side sprays of acicular kutnahorite crystals radiate in tuffed groups

Mineral Data
What's on the rock

Kutnohorite

Formula: 
Ca(Mn,Mg,Fe)(CO3)2
Strunz: 
5.AB.10
Hardness: 
3.5 - 4.0
Type Locality: 
Poličany, Kutná Hora (Kuttenberg), Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic

Calcite

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

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