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Betpakdalite-CaMg & Sewardite

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JYJ1091909

Betpakdalite-CaMg & Sewardite

Description Tabs

Description
Locality: 
Tsumeb Mine, Otavi Highlands, Namibia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 0.9 × 0.5 cm
Description

Yellow betpakdalite-CaMg with red sewardite from the Tsumeb mine, Tsumeb, Namibia. 

Rare mineral. 

SEM-EDS & SC-XRD analysed. 

 

Mineral Data
What's on the rock

Betpakdalite-CaMg

Formula: 
[Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)]
Hardness: 
0.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia

Sewardite

Formula: 
CaFe3+2(AsO4)2(OH)2
Strunz: 
8.BH.30
Hardness: 
0.0
Type Locality: 
Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto Region (Oshikoto), Namibia