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Quartz Var Amethyst

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MCH617534

Quartz Var Amethyst

Description Tabs

Description
Locality: 
Stange, Hedmark, Norway
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.1 × 6 × 5.9 cm
Description

A fine specimen of amethyst showing nice phantom with several smaller side-crystals is set on a granitic matrix with some smaller quartz and calcite crystals. These represent a subsequent generation of crystallization.

The amethyst crystals were found in a clay filled fault zone within a granitic rock in a gravel quarry, mostly as loose crystals.

There is little damage on one side of the specimen which might be of natural origin due to the tectonic movements within the fault zone.

This rare specimen with matrix was found by the local collector Arne Moløkken in 1990.

Mineral Data
What's on the rock

Quartz

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

Amethyst

Variety Of: 

Quartz

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

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