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Chalcopyrite & Calcite

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SCH76808

Chalcopyrite & Calcite

Description Tabs

Description
Locality: 
Pea Ridge Mine, Washington County, Missouri, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.9 × 5.2 × 2.5 cm
Description

An old specimen with a group of brassy and bright crystals of chalcopyrite on a bed of calcite crystals that have been coated with a dark mineral, so that they provide a pretty contrast for the chalcopyrites. The chalcopyrites have the jagged form typical for this locality.

 

Mineral Data
What's on the rock

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Calcite

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

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