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Holfertite & Pseudobrookite

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JYJ115143

Holfertite & Pseudobrookite

Description Tabs

Description
Locality: 
Starvation Canyon, Thomas Range, Juab County, Utah, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.3 × 3 × 1.8 cm
Description

Very nice aggregate of holfertite in a colour reminding me of grain attached to a pseudobrookite crystal. Holfertite is a Ti uranium mineral.

Mineral Data
What's on the rock

Holfertite

Formula: 
CaxU6+2-xTi(O8-xOH4x)·3H2O
Strunz: 
4.GB.70
Hardness: 
4.0 - 0.0
Type Locality: 
Holfertite pit, Starvation Canyon (Searles Canyon), 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