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Calcite Quartz & Chalcopyrite

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MGR215126

Calcite Quartz & Chalcopyrite

Description Tabs

Description
Locality: 
Cavnic Mine, Maramureș County, Romania
Size Range: 
Cabinet (10-18 cm)
Size: 
15.7 × 11.9 × 5.7 cm
Description

A beautiful plate of lustrous sharp terminated quartz crystals. Some intense golden chalcopyrite crystals are scattered all over the specimen. Further there are several well developed and very exposed sprays of calcite. A very showy specimen with great visual impact. Undamaged.

Mineral Data
What's on the rock

Calcite

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Chalcopyrite

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