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Topaz Bixbyite & Pseudobrookite

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PDM741860

Topaz Bixbyite & Pseudobrookite

Description Tabs

Description
Locality: 
Thomas Range, Juab County, Utah, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 6.8 × 2.2 cm
Largest Crystal: 
1.00cm
Description

Gemmy, highly lustrous, isolated and euhedral pale pink topaz crystals to 10 mm, are formed by the prism {110} and {120}, and are associated to sharp lustrous pseudobrookite and bixbyite of 4 mm in size, sitting on white rhyolite matrix.

Ex. Dr. Bob Janssens collection, #945.

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

Bixbyite

Formula: 
Mn3+2O3
Strunz: 
4.CB.10
Hardness: 
6.0 - 6.5
Colour: 
Black
Streak: 
Black
Type Locality: 
Maynard's claim (Pismire Knolls), Thomas Range, Juab Co., Utah, USA...

Pseudobrookite

Formula: 
Fe2TiO5
Strunz: 
4.CB.15
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
6.0
Streak: 
Brown
Type Locality: 
Uroi Hill (Arany Hill), Simeria, Hunedoara Co., Romania

Seller Information

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