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Chalcocite & Calcite

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RBM585333

Chalcocite & Calcite

Description Tabs

Description
Locality: 
Cobriza Mine, Chinchado-Sacramento, Pabellón, Copiapó Province, Atacama Region, Chile
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5 × 3 cm
Largest Crystal: 
0.50cm
Description

Chalcocite crystals of half a centimeter, which are distinguished by their intense brightness, some of them are in perfect condition and with a crystallographic habit very characteristic of this mineralogical species. Crystals of calcite and asbestos accompany the samples, on an andesite matrix with veins of bornite.

Mineral Data
What's on the rock

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0

Calcite

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

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