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Calcite & Sphalerite

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MGR772586

Calcite & Sphalerite

Description Tabs

Description
Locality: 
Trepča, Mitrovica District, Kosovo
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.4 × 5 × 3.6 cm
Description

The matrix consists of jet-black, sharp terminated and highly lustrous Sphalerite crystals. They are covered with tiny, sparkling Calcite crystals - they are not completely white; they show just a touch of ivory color. The large crystals are completely white - so there is minor difference in the color of the two Calcite generations. The large Calcite crystals developed scalenohedrons and they are formed like a butterfly. The faces consists of razor sharp micro-faces, which are all lustrous. I tried to do my best with the camera, but I have to note that the assemble is more tri-dimensional in person. No significant damages to report.

Mineral Data
What's on the rock

Calcite

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

Sphalerite

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