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Topaz

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PDM764689

Topaz

Description Tabs

Description
Locality: 
Klein Spitzkopje, Karibib, Erongo Region, Namibia
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.7 × 4.7 × 4.3 cm
Description

A well-developed pale blue coloured topaz crystal of good size well terminated. It is formed by the prisms {120} and {110}, modified by {101}. It is formed by crystal faces or contacts with other crystals, but it is not broken.

Acquired near the Klein Spitzkopje by Isidoor Venesoen in 2001.

Mineral Data
What's on the rock

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

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