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Tourmaline

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TRM865782

Tourmaline

Description Tabs

Description
Locality: 
Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.7 × 2 cm
Description

Interesting etched but undamaged Tourmaline crystal together with Bertrandite ?

Mineral Data
What's on the rock

Tourmaline

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

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