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Topaz

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UVM833132

Topaz

Description Tabs

Description
Locality: 
Aquarius Mountains, Mohave County, Arizona, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.8 × 1.5 cm
Description

A thumbnail specimen featuring microcrystals of topaz on rhyolite, unremarkable in any way except for it's Arizona locality.   I can count on my fingers the number of topaz specimens from the state that I've seen.   Collected by George Stevens.

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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