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Beudantite & Segnitite

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Beudantite & Segnitite

Rare Mineral

Description Tabs

Description
Locality: 
Kintore Open Cut, Broken Hill, New South Wales, Australia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.8 × 4.2 × 2.2 cm
Description

A thin crystalline coating of the rare lead arsenate beudantite, which may also grade into segnitite, occurs on a quartz matrix and is associated with some colourless mimetite crystals and possibly olivenite as microscopic green crystals in places.

Mineral Data
What's on the rock

Beudantite

Formula: 
PbFe3(AsO4)(SO4)(OH)6
Strunz: 
8.BL.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Type Locality: 
Louise Mine, Bürdenbach, Altenkirchen, Wied Iron Spar District, Westerwald, Rhineland-Palatinate, Germany

Segnitite

Formula: 
PbFe3+3(AsO4)2(OH,H2O)6
Strunz: 
8.BL.10
Crystal System: 
Trigonal
Hardness: 
4.0
Type Locality: 
Kintore opencut, Broken Hill, Yancowinna Co., New South Wales, Australia
Gondwana Minerals