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Scorodite Dussertite Bariopharmacosiderite & Ferrihydrite

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SCH65651

Scorodite Dussertite Bariopharmacosiderite & Ferrihydrite

Description Tabs

Description
Locality: 
Clara Mine, Oberwolfach, Freiburg Region, Baden-Württemberg, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 1.1 × 0.7 cm
Description

A thin matrix is host to scorodite crystals groups, some covered by red ferrihydrite. There are hundreds of little bright green segnitite crystals plus dozens of red cubes of bariumpharmacosiderite.

 

Mineral Data
What's on the rock

Scorodite

Formula: 
Fe3+AsO4·2H2O
Strunz: 
8.CD.10
Crystal System: 
Orthorhombic
Hardness: 
3.5 - 4.0
Type Locality: 
Stamm Asser Mine, Graul, Langenberg, Schwarzenberg District, Erzgebirge, Saxony, Germany

Dussertite

Formula: 
BaFe3+3(AsO4)2(OH)5
Strunz: 
8.BL.10
Hardness: 
3.5
Type Locality: 
Djebel Debar (Djebel Debagh), Hammam Meskoutine, Guelma, Constantine Province, Algeria

Bariopharmacosiderite

Formula: 
Ba0.5Fe3+4(AsO4)3(OH)4·5H2O
Strunz: 
8.DK.10
Crystal System: 
Tetragonal
Hardness: 
2.5
Type Locality: 
Clara Mine, Rankach valley, Oberwolfach, Wolfach, Black Forest, Baden-Württemberg, Germany

Ferrihydrite

Formula: 
Fe3+10O14(OH)2
Strunz: 
4.FE.35
Hardness: 
0.0
Type Locality: 
Belousovskii Mine, Altai Mts (Rudnyi Altai), Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast'), Kazakhstan...
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