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Cuprite & Native Copper With Cobaltoan Calcite

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CLB75511

Cuprite & Native Copper With Cobaltoan Calcite

Description Tabs

Description
Locality: 
Mashamba, Katanga, Democratic Republic of the Congo
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.6 × 5.3 × 3.7 cm
Description

Very interesting specimen with a rarely seen paragenesis of almost black cuprite, shiny copper and pink cobaltoan calcite on a brecciated matrix.

Mineral Data
What's on the rock

Cuprite

Formula: 
Cu2O
Strunz: 
4.AA.10
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

Copper

Formula: 
Cu
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Cobaltoan Calcite

Variety Of: 

Calcite

Formula: 
CaCO3
Strunz: 
5.AB.05
Hardness: 
3.0
Formula: 
(Ca,Co)CO3
Hardness: 
0.0

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