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Quartz & Tourmaline

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ESM893785

Quartz & Tourmaline

Description Tabs

Description
Locality: 
Cruzeiro Mine, São José da Safira, Minas Gerais, Brazil
Class: 
Single Crystal
Size Range: 
Cabinet (10-18 cm)
Size: 
13 × 4 × 4 cm
Description

A transparent doubly terminated quartz crystal with tourmaline inclusions

Mineral Data
What's on the rock

Quartz

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

Tourmaline

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