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Calcite & Pyrolusite

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MGR785450

Calcite & Pyrolusite

Description Tabs

Description
Locality: 
Daye County, Huangshi, Hubei Province, China (Peoples Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 6.5 × 5.3 cm
Description

This is very attractive material - the particular specimen is developed as floater, it consits of numerous inter-grown crystals - all of them razor-sharp terminated and on highest luster. The crystals are very light, partly water-clear, but they also show neraly dark phantoms, which give a spectacular contrast to this very aesthetic assemble. I show this amazing piece in various positions to give you an idea of the assemble - but still photos don´t do justice to it. 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

Pyrolusite

Formula: 
MnO2
Strunz: 
4.DB.05
Hardness: 
2.0 - 6.5