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Topaz On Quartz

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CR726528

Topaz On Quartz

Description Tabs

Description
Locality: 
Nujiang Valley, Nujiang, Yunnan Province, China (Peoples Republic)
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 4 × 2 cm
Description

Beautiful and sharp, gemmy topaz crystals on quartz crystals from China.

Nice old specimen from Armin Wendland collection.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White