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Bermanite & Phosphosiderite

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CR586680

Bermanite & Phosphosiderite

Rare !
Classic Locality

Description Tabs

Description
Locality: 
Sítio do Castelo Mine, Folgosinho, Gouveia, Guarda District, Portugal
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 5.4 × 2 cm
Description

Spectacular sample of blue, globular phosphosiderite with deep redbrown bermanite crystals in vugs of the matrix.

Very rich old time specimen.

Mineral Data
What's on the rock

Bermanite

Formula: 
Mn2+Mn3+2(PO4)2(OH)2·4H2O
Strunz: 
8.DC.20
Crystal System: 
Monoclinic
Hardness: 
3.5
Type Locality: 
7U7 Ranch (7-U-7 Ranch), Bagdad Mine area, Hillside, Eureka District, Yavapai Co., Arizona, USA

Phosphosiderite

Formula: 
FePO4·2H2O
Strunz: 
8.CD.05
Hardness: 
3.5 - 4.0
Type Locality: 
Kalterborn Mine, Eiserfeld, Siegerland, North Rhine-Westphalia, Germany