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Dolomite Psm Calcite & Pyrite

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CLB591903

Dolomite Psm Calcite & Pyrite

ex collection Peter Wittur
Pseudomorph

Description Tabs

Description
Locality: 
Cavnic Mine, Maramureș County, Romania
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
15 × 12.7 × 10.6 cm
Weight: 
958.00gr
Description

A fantastic perimorph of sheer white dolomite after calcite scalnohedrons. After the calcite crystals disappeared, the dolomite continued to grow, even after some tips were broken off  (the broken surfaces of the cracks healed and re-crystalized). The specimen is a floater, with crystals on the outer and inner part (hollow, but with crystals - the heavy pyrite covered part). The glossy pyrite balls are a special treat and the two holes offer a look inside. Very special.

Mineral Data
What's on the rock

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White

Calcite

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

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