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Apatite & Gilbertite

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SUR68307

Apatite & Gilbertite

Description Tabs

Description
Locality: 
North Goonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, United Kingdom
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 3 cm
Description

Aesthetically challenged, but an interesting paragenesis of pegmatite minerals and a sole tiny, transparent torbernite crystal (1mm).

Mineral Data
What's on the rock

Apatite

Synonym Of: 

Chlorapatite

Formula: 
Ca5(PO4)3Cl
Strunz: 
8.BN.05
Hardness: 
5.0

Fluorapatite

Formula: 
Ca2Ca3(PO4)3F
Strunz: 
8.BN.05
Hardness: 
5.0

Hydroxylapatite

Formula: 
Ca5(PO4)3(OH)
Strunz: 
8.BN.05
Hardness: 
5.0
Crystal System: 
Hexagonal
Hardness: 
5

Gilbertite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Hardness: 
0.0
Surrey Minerals