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Malachite & Chrysocolla & Calcite

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BMM677339

Malachite & Chrysocolla & Calcite

Description Tabs

Description
Locality: 
Rotenstein Mine, Ringenwechsel, Schwaz District, Tyrol, Austria
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 7.5 × 4.4 cm
Description

A very rare sample from this Austrian location: turquoise colored chrysocolla and dark green malachite. The malachite and the chrysocolla looks molten and that makes this piece even more interesting. There are also bright and lustrous calcite skalendoeder grown on the specimen. They are also partially covered with malachite. A very rare and interesting piece, all in all!

Mineral Data
What's on the rock

Malachite

Formula: 
Cu2(CO3)(OH)2
Strunz: 
5.BA.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

Calcite

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