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Arsenbrackebuschite Tsumcorite & Mimetite

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UVM631357

Arsenbrackebuschite Tsumcorite & Mimetite

Rare Mineral

Description Tabs

Description
Locality: 
Ojuela Mine, Mapimi, Durango, Mexico
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.2 × 2 cm
Description

An excellent thumbnail specimen features two vugs with orange arsenbrackebushite crystals.   The main vug also hosts a sharp colorless barrel of mimetite, and the vug on the rear has a small carpet of brown tsumcorite.   

Mineral Data
What's on the rock

Arsenbrackebuschite

Formula: 
Pb2Fe3+(AsO4)2(OH)
Strunz: 
8.BG.05
Crystal System: 
Monoclinic
Hardness: 
4.5
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

Mimetite

Formula: 
Pb5(AsO4)3Cl
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Treue Freundschaft Mine, Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany

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