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Topaz

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NST649537

Topaz

Gem Crystal

Description Tabs

Description
Locality: 
Thomas Range, Juab County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3.5 × 2 cm
Largest Crystal: 
1.90cm
Description

Cognac-colored, transparent crystals of topaz on typical rhyolitic matrix from the famous Thomas Range mountains.

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