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Sewardite & Carminite

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CSL134333

Sewardite & Carminite

Rare Mineral

Description Tabs

Description
Locality: 
Sonora Copper Mine, Benjamin Hill, Benjamin Hill Municipality, Sonora, Mexico
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 2.9 × 2.1 cm
Description

Sewardite is a very rare Ca-Fe arsenate mineral, occurs as epitaxy on carminite. Confirmed material, SEM-EDS analysis shows many of these crystals are built up by inner carminite core with outer sewardite crust. Some yellow segnitite is also present on the sample

Mineral Data
What's on the rock

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

Carminite

Formula: 
PbFe3+2(AsO4)2(OH)2
Strunz: 
8.BH.30
Crystal System: 
Orthorhombic
Hardness: 
3.5
Type Locality: 
Louise Mine, Bürdenbach, Altenkirchen, Wied Iron Spar District, Westerwald, Rhineland-Palatinate, Germany
Loranth Minerals

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