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Chalcopyrite & Quartz

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BMM881296

Chalcopyrite & Quartz

Floater

Description Tabs

Description
Locality: 
Borieva Mine, Madan, Smolyan Oblast, Bulgaria
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.5 × 2.1 cm
Description

Chalcopyrite with fantastic tarnishing colors mainly in the shades of blue, violet, red and golden. The chalcopyrite sit individually on matrix which is overgrown with glossy, colorless quartz crystals. The back is also well crystallized with colored chalcopyrite and quartz. The piece comes from a small find in summer 2021. Well crystallized all around - a undamaged floater specimen!

Mineral Data
What's on the rock

Chalcopyrite

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

Quartz

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