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Smoky Quartz With Brookite Inclusions

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RHT750128

Smoky Quartz With Brookite Inclusions

ex collection Horst Bauer, ex B. & N. Reimann
Classic Locality

Description Tabs

Description
Locality: 
Valleggia Glacier, Valleggia Valley, Leventina, Ticino, Switzerland
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.8 × 4.5 × 3.5 cm
Weight: 
53.00gr
Description

Beautiful cluster of pale smoky quartz crystals. The main crystal shows the Tessin habit with very nice striations. Furthermore the crystals show some interesting inclusions - amongst others platy brown crystals that I identified as brookite (no guarantee, but I cannot imagine anything else). Unfortunately the inclusions cannot be depicted well, but are clearly visible with a good magnifying lense.
 

Mineral Data
What's on the rock

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0

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