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Hematite & Chalcopyrite

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PDM666181

Hematite & Chalcopyrite

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Description
Locality: 
Ticino, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.2 × 2 cm
Largest Crystal: 
0.60cm
Description

Classic alpine rosettes of hematite with very good lustre and in good condition with disphenoidal twinned crystals of chalcopyrite, partially transformed superficially to grey dull chalcocite. The matrix is formed by white quartz and felspar.

Ex. Gerard Vogel specimen. Acquired in 1977 from local Swiss collector.

Mineral Data
What's on the rock

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

Chalcopyrite

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

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