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Topaz

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TBM1064922

Topaz

Classic Locality

Description Tabs

Description
Locality: 
Tepetate, Villa de Arriaga Municipality, San Luis Potosi, Mexico
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 3.5 × 3 cm
Largest Crystal: 
1.00cm
Weight: 
45.00gr
Description

Very nice Topaz crystals up to 10 mm on volcanic tuff matrix; they have the very light sherry color typical for this locality, and a fine glassy luster

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