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Gilbertite With Tourmaline

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PDM892482

Gilbertite With Tourmaline

Classic Locality

Description Tabs

Description
Locality: 
Gunheath Pit, St Austell, Cornwall, United Kingdom
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 3.3 × 1.6 cm
Description

Lustrous white yellowish laminar gilbertite with an end rich in tiny needles of black tourmaline. Classic Cornish specimen, with label.

Ex René Virlet specimen.

Combine specimens to reduce shipping costs!.

Mineral Data
What's on the rock

Gilbertite

Variety Of: 

Muscovite

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

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7

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