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Quartz Psm Tourmaline

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SHS28949

Quartz Psm Tourmaline

Description Tabs

Description
Locality: 
Urubu mine, Monte Belo, Itinga, Minas Gerais, Brazil
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.4 × 3.6 × 2.8 cm
Description

Quartz replaced green tourmaline crystals

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