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Johnsomervilleite

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GFM754509

Johnsomervilleite

Description Tabs

Description
Locality: 
Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.1 × 1 cm
Description

glassy, highly lustrous, dark greenish-brown aggregates of 4 mm with Triphylite, Frondelite and other more common Phosphates in an Albite-Quartz matrix. Very good specimens of this rare Phosphate from a spectacular find around 1980; KS 65,00; NS 95,00

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
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