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Johnsomervilleite & Bermanite

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SER202183

Johnsomervilleite & Bermanite

Rare Mineral

Description Tabs

Description
Locality: 
Sapucaia Mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3 × 2.5 cm
Description

Black massive johnsomervilleite with numerous red crystals of bermanite

Mineral Data
What's on the rock

Johnsomervilleite

Formula: 
Na10Ca6Mg18Fe25(PO4)36
Strunz: 
8.AC.50
Hardness: 
4.5
Type Locality: 
Loch Quoich, North West Highlands (Inverness-shire), Scotland, UK

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