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Tourmaline & Quartz

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ESM750890

Tourmaline & Quartz

Description Tabs

Description
Locality: 
Pederneira Mine, São José da Safira, Minas Gerais, Brazil
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 2.5 × 2 cm
Description

A translucent blue tourmaline crystal attached to a clear quartz crystal

Mineral Data
What's on the rock

Tourmaline

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White