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Chalcocite

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SCH32226

Chalcocite

Description Tabs

Description
Locality: 
Bristol Copper Mine, Bristol, Hartford County, Connecticut, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 5.8 × 2.9 cm
Description

A fantastic old time classic chalcocite from Connecticut.

This handsome specimen comes from the famous Bristol Copper Mine, that first opened in 1802 and ceased operations in 1953. This specimen shows many sharply defined crystals, the largest of which is 8mm! 

The pseudohexagonal cyclic twinning of the chalcocite crystals is quite well-displayed in the largest crystal as well. It comes with an old label from Schortmann's Minerals.

All in all, an amazing classic specimen from a long closed famous Connecticut locale, and in excellent condition!

Mineral Data
What's on the rock

Chalcocite

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

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