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Quartz On Calcite

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Quartz On Calcite

Classic Locality

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 3.6 × 3.2 cm
Description

If you know Tsumeb, you know that this simple looking combination is a real rarity for Tsumeb: glossy quartz crystals are rare at Tsumeb by themselves, but as a cover over a rather huge, double-terminated calcite (rather heavy - maybe plumboan?) scalenohedron - this is absolutely scarce and impossible to find anywhere else.

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Calcite

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

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