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Holfertite Topaz & Hematite

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ESM534430

Holfertite Topaz & Hematite

Type Locality

Description Tabs

Description
Locality: 
Holfertite Pit, Starvation Canyon, Thomas Range, Juab County, Utah, United States of America
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2.9 × 2.3 cm
Description

Elongated yellow holfertite crystal with hematite crystals on and in a topaz crystal

 

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

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

Hematite

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