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Topaz

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PDM943771

Topaz

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: 
3.3 × 3 × 2.1 cm
Largest Crystal: 
3.10cm
Description

Radial cluster with text book, well-developed gemmy crystals of topaz, prismatic on [001]. The vitreous lustre is very intense with an attractive pale cognac colour. All the crystals are complete and are formed by the prism {110}, modified by {120}, bevelled by {010}. The flat top, face (001), is small. Good specimen that displays great cause it is mounted on a methacrylate socle.

From a recent find (2020).

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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