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Anatase Rutile & Brookite

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CSL514050

Anatase Rutile & Brookite

Classic Locality

Description Tabs

Description
Locality: 
Grauleiten Peak, Ankogel, Hohe Tauern, Carinthia, Austria
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.1 × 3.1 × 1.7 cm
Description

This is a very nice combination of anatase, brookite and rutile, three titanium-dioxide polymorphs. Anatase forms orange red bipyramidal crystals, brookite forms yellow tabular crystals and rutile forms golden yellow sagenite like aggregates and needles on feldspar matrix. Very nice specimens.

Mineral Data
What's on the rock

Anatase

Formula: 
TiO2
Strunz: 
4.DD.05
Hardness: 
5.5 - 6.0
Type Locality: 
St Christophe-en-Oisans, Bourg d'Oisans, Isère, Rhône-Alpes, France...

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

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
Loranth Minerals

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