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Tourmaline

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RAF102472

Tourmaline

Gem Crystal

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.4 × 0.6 × 0.4 cm
Largest Crystal: 
7.40cm
Description

Tourmaline. Nice long gem crystal from the collection of Margret Burk. Johannesburg. Nice and long !!...

Weight: 4,8 gr.

Mineral Data
What's on the rock

Tourmaline

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