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Tourmaline & Quartz

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MGR916454

Tourmaline & Quartz

Classic Locality

Description Tabs

Description
Locality: 
Golconda Mine, Golconda, Coroaci, Minas Gerais, Brazil
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 2.5 cm
Description

Intense green coloured tourmaline crystal nicely embedded in snow-white quartz matrix from the Golconda mine in Brazil. The transparency is truly amazing at this ecample.

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