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Chalcocite

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BCK732223

Chalcocite

Classic Locality

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Description
Locality: 
Bristol Copper Mine, Bristol, Hartford County, Connecticut, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 3.3 × 2.3 cm
Description

You are bidding on a small miniature sample with some crystals of chalcocite on quartz matrix from this classic US locality. Collected in the 1850s!

Mineral Data
What's on the rock

Chalcocite

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

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