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Tourmaline

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NST757340

Tourmaline

Description Tabs

Description
Locality: 
Etemba Farm 135, Dâures, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 3.3 × 3 cm
Description

Dark blue, almost black Tourmaline from Farm Etemba

Mineral Data
What's on the rock

Tourmaline

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