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Pseudobrookite & Hematite On Quartz

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PJM111604

Pseudobrookite & Hematite On Quartz

Description Tabs

Description
Locality: 
Topaz Mountain, Thomas Range, Juab County, Utah, United States of America
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 5 × 3.2 cm
Description

A large gas pocket in off white rhyolite is lined with small doubly terminated quartz and topaz crystals on to which have grown isolated bladed pseudobrookite acicular crystals and thin black hexangonal bladed hematite crystals

Mineral Data
What's on the rock

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

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
Earthstones Australia

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