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Francolite

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RPL737881

Francolite

Description Tabs

Description
Locality: 
Bedford United Mine, Gulworthy, Devon, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.5 × 6.5 × 2.3 cm
Largest Crystal: 
0.10cm
Weight: 
69.00gr
Description

A rarely seen location for any material.

Vuggy siderite matrix is covered on one side by a myriad of small colourless or slightly yellow francolite crystals, some in groups forming little stalagmites.

Previous labels supplied (not photographed)
Mineral Data
What's on the rock

Francolite

Variety Of: 

Carbonate-rich Fluorapatite

Formula: 
Ca5(PO4,CO3)3(F,O)
Strunz: 
8.BN.05
Hardness: 
5.0

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