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Tourmaline

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MGR794914

Tourmaline

Classic Locality

Description Tabs

Description
Locality: 
Otjua Mine, Otjua Farm 37, Karibib, Erongo Region, Namibia
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.6 × 0.6 cm
Description

Very rare material from old discoveries at this famous mine. The cross section is well cut and polished at both sides. It shows fantastic colors: intense royal blue, a very light area with touch of blue and dark green framing along the edges.

Mineral Data
What's on the rock

Tourmaline

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