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Jamesite & Tsumcorite

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ESM990018

Jamesite & Tsumcorite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1 cm
Description

Red-brown jamesite crystals with orange yellow tsumcorite on matrix - a Tsumeb classic

Mineral Data
What's on the rock

Jamesite

Formula: 
Pb2Zn(Fe2+,Zn)2Fe3+4(AsO4)4(OH)10
Strunz: 
8.BK.25
Crystal System: 
Triclinic
Hardness: 
3.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Tsumcorite

Formula: 
Pb(Zn,Fe3+)2(AsO4)2·2(H2O,OH)
Strunz: 
8.CG.15
Crystal System: 
Monoclinic
Hardness: 
4.5
Streak: 
Yellow
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia