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Pyrrhotite & Calcite

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MGR710386

Pyrrhotite & Calcite

Description Tabs

Description
Locality: 
Trepča, Mitrovica District, Kosovo
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 6.4 × 3.8 cm
Description

Large, sharp developed pyrrhotite crystals formed a tower-like, freestanding assemble set on a base on light calcite crystals. The assemble is really dramatic and very aesthetic. Contrast is excellent, too. No significant damages to report, backside was on the rock.

Mineral Data
What's on the rock

Pyrrhotite

Formula: 
Fe1-xS (x = 0 to 0.17)
Strunz: 
2.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Calcite

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