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Chalcocite & Pyrite

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Chalcocite & Pyrite

Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5 × 1.6 cm
Description

An almost massive  chalcocite (analyzed) specimen with several very good, glossy crystals. Pyrite on the back and some colorless crystals on top (probably calcite).

Pyrite is rare from Tsumeb.

Mineral Data
What's on the rock

Chalcocite

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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