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Smoky Quartz & Adularia

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CR166535

Smoky Quartz & Adularia

Description Tabs

Description
Locality: 
Giuv Valley, Tujetsch, Surselva Region, Grisons, Switzerland
Size Range: 
Cabinet (10-18 cm)
Size: 
13 × 11 × 9 cm
Largest Crystal: 
7.50cm
Description

This is a fantastic old alpine specimen from Hoffmann collection.

Two absolutely gemmy and light smoky quartz crystals in the center of the specimen surounded by several smaller rock crystals and perfectly terminated, large adularia crystals.

A truely very attractive and showy specimen - collected 1987

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

Adularia

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic
Hardness: 
6 Ortho - clase