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Chalcocite

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WEB09515

Chalcocite

Description Tabs

Description
Locality: 
St Agnes, Cornwall, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.5 × 2.5 × 1 cm
Largest Crystal: 
1.00cm
Description

Nice floater, thumbnail with perfect chalcocite crystals with a superficial alteration in malachite.

Mineral Data
What's on the rock

Chalcocite

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