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Chalcopyrite & Sphalerite

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PJM60930

Chalcopyrite & Sphalerite

Description Tabs

Description
Locality: 
St Agnes, Cornwall, United Kingdom
Size Range: 
Thumbnail (1-3cm)
Size: 
0.8 × 2 × 1.8 cm
Description

A single chalcopyrite crystals with 2 lusterous black sphalerite crystals on one edge.

Oldtime specimen ex J mommers Collection , ex J Leach Collection and at least numbers from 2 other earlier collections

Mineral Data
What's on the rock

Chalcopyrite

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

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0
Earthstones Australia

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