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Tourmaline & Quartz

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TPX211395

Tourmaline & Quartz

Description Tabs

Description
Locality: 
Karibib District, Erongo Region, Namibia
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 3.4 × 2.7 cm
Description

Very nice group of black tourmalines and quartz on a matrix of feldespat and hyalite.
This is a very attractive and beautiful specimen.

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

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