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Francolite

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RPL681025

Francolite

Description Tabs

Description
Locality: 
Gunnislake Clitters Mine, Calstock, Cornwall, United Kingdom
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 6.5 × 3 cm
Largest Crystal: 
0.00cm
Weight: 
355.00gr
Description

An uncommonly large specimen of sparkling brick red microcrystals of carbonate fluorapatite aka francolite on a fine grained granite matrix.

Very rich specimen which displays well.

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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