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Aragonite & Malachite

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CLB507728

Aragonite & Malachite

ex collection Holger Wilhelmi, November 1942
With Antique Label

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10.2 × 8 × 6 cm
Description

Lots of acicular blueish white aragonite crystals in vuggy matrix with malachite and probably massive cuprite/tennantite (?). Acicular aragonite is not so common in Tsumeb.

Mineral Data
What's on the rock

Aragonite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.15
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Type Locality: 
Gallo river, Molina de Aragón, Guadalajara, Castile-La Mancha, Spain

Malachite

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

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