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Brookite & Quartz

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Brookite & Quartz

ex Americo Urbinati collection

Description Tabs

Description
Locality: 
Elm, Glarus Süd, Glarus, Switzerland
Class: 
Crystal Group/Cluster
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 1.5 × 0.9 cm
Description

a wonderful, single, red orange brookite crystal on quartz

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

Quartz

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