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Brookite Rutile & Quartz

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PDM673221

Brookite Rutile & Quartz

Description Tabs

Description
Locality: 
Zard Mountain, Kharan, Baluchistan, Pakistan
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2.1 × 1.4 cm
Description

Flattened transparent quartz crystal included by brown tabular brookite crystals that show epitaxial growths of needle-like rutile of intense silky lustre and uncommon silver-grey colour.

Extracted in 04/2015 at the Zard mountain.

Mineral Data
What's on the rock

Brookite

Formula: 
TiO2
Strunz: 
4.DD.10
Crystal System: 
Orthorhombic
Hardness: 
5.5 - 6.0
Type Locality: 
Twll Maen Grisial, Fron Olau, Prenteg, Gwynedd (Caernarvonshire), Wales, UK

Rutile

Formula: 
TiO2
Strunz: 
4.DB.05
Crystal System: 
Tetragonal - Ditetragonal Dipyramidal
Hardness: 
6.0 - 6.5
Type Locality: 
Rutile locality, Horcajuelo de la Sierra, Madrid, Spain

Quartz

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

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