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Fluorapatite On Albite With Muscovite

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VCV180193

Fluorapatite On Albite With Muscovite

Description Tabs

Description
Locality: 
Alto da Cabeca Mine, Parelhas, Borborema Province, Rio Grande do Norte, Brazil
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2 × 3.2 × 1.4 cm
Largest Crystal: 
0.60cm
Description

Beautiful deep blue hexagonal fluorapatite crystals with light blue cores on albite together with books of muscovite.

A fine specimen from a rarely seen locality for fluorapatite.

Mineral Data
What's on the rock

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Crystal System: 
Hexagonal
Hardness: 
5.0
Streak: 
White
Type Locality: 
Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany

Albite

Formula: 
NaAlSi3O8
Strunz: 
9.FA.35
Crystal System: 
Triclinic
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Finnbo (Finbo), Falun, Dalarna, Sweden

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Streak: 
White
Vic's Vugh Minerals