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Arsenobismite

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HCH77194

Arsenobismite

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Description
Locality: 
Clara Mine, Wolfach, Black Forest, Baden-Württemberg, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
1 × 1 × 1 cm
Description

two samples ( a about 1 x 1 x 1 cm and a really small one) with yellowish aggregates of Arsenobismite (not a own mineral, its a mixture of Preisingerite, Beudantite, Atelestite and Segnitite) up to 0,5 mm rich on this speciem.

Mineral Data
What's on the rock

Arsenobismite

Mixture Of: 

Atelestite

Formula: 
Bi2(AsO4)O(OH)
Strunz: 
8.BO.15
Hardness: 
4.5 - 5.0

Beudantite

Formula: 
PbFe3(AsO4)(SO4)(OH)6
Strunz: 
8.BL.05
Hardness: 
3.5 - 4.5

Preisingerite

Formula: 
Bi3(AsO4)2O(OH)
Strunz: 
8.BO.10
Hardness: 
3.0 - 4.0

Segnitite

Formula: 
PbFe3+3(AsO4)2(OH,H2O)6
Strunz: 
8.BL.10
Hardness: 
4.0
Strunz: 
41.6.9.1
Colour: 
Yellowish-brown, yellowish-green

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