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Chalcopyrite With Calcite & Quartz

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BMM1046488

Chalcopyrite With Calcite & Quartz

Description Tabs

Description
Locality: 
Borieva Mine, Madan, Smolyan Oblast, Bulgaria
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 3.8 × 2.8 cm
Description

Beautiful piece with exposed chalcopyrite crystals. What’s extraordinary about this piece are the amazing metallic iridescent patina with violet and blue shades in combination with the deep golden color. The piece is crystallized as a floater specimen, with some additional calcite crystals which give a good contrast. Countless small, transparent quartz crystals have also grown on the ore matrix.

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

Quartz

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