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Topaz

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PDM923627

Topaz

Gem Crystal

Description Tabs

Description
Locality: 
Bukuru, Jos Plateau, Plateau, Nigeria
Class: 
Single Crystal
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 2.9 × 2.7 cm
Weight: 
29.00gr
Description

Euhedral terminated crystal of topaz of light blue colour with a cleaved plane at base. Old Nigerian specimen from bukuru, scarce nowadays in the market.

Exchanged in 1985 by René Virlet.

Combine specimens to reduce shipping costs!.

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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