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Malachite & Calcite

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BMM940098

Malachite & Calcite

Description Tabs

Description
Locality: 
Ringenwechsel, Schwaz District, Tyrol, Austria
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.4 × 4 × 1.6 cm
Description

Crusts of intensely colored malachite on brownish calcite skalendoeder. The calcites are partly colored slightly green by malachite. They have a glossy surface, some with iridescent colors. Old and rare piece from this well-known location!

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

Calcite

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