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Tourmaline

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BMM810591

Tourmaline

Description Tabs

Description
Locality: 
Cruzeiro Mine, São José da Safira, Minas Gerais, Brazil
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 0.6 × 0.3 cm
Description

A transparent green tourmaline from Minas Gerais. The crystal has no end surfaces and is not free from damage. The tourmaline is very transparent combined with a good elongated striation along the crystal.

Mineral Data
What's on the rock

Tourmaline

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