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Conichalcite On Malachite In Tarnowitzite

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KMF535889

Conichalcite On Malachite In Tarnowitzite

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Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Combination
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 3.5 × 2.3 cm
Description

This is a very rare and overwhelming green colored conichalcite on malachite featuring many large white to clear super lustrous prismatic crystals. The high level of inclusion renders many crystals invisible since the color blends together and only when you move it around does the flash of reflected light reveal the crystal surfaces.

This specimen is three dimensional, composed of loosely arranged crystals, the aesthetics is good with the isolated largest crystal standing vertically along one edge showing off its white termination which is contrasting in this specimen since all the other crystals are almost completely green. There are three double terminated crystals lying across the specimen revealing well defined terminations at either end. The inclusions consist of conichalcite and malachite which is rare and I have not managed to find another one like it anywhere.

The green minerals are mostly present as complex blade like structures consisting of multi colored spheres.  

The condition is superb with only one missing termination.

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Mineral Data
What's on the rock

Conichalcite

Formula: 
CaCu(AsO4)(OH)
Strunz: 
8.BH.35
Crystal System: 
Orthorhombic
Hardness: 
4.5
Type Locality: 
Hinojosa del Duque, Córdoba, Andalusia, Spain

Malachite

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

Tarnowitzite

Variety Of: 

Aragonite

Formula: 
CaCO3
Strunz: 
5.AB.15
Hardness: 
3.5 - 4.0
Hardness: 
0.0
Type Locality: 
Tarnowskie Góry (Tarnowitz), Upper Silesia (Śląskie), Poland

Seller Information

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