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Quartz & Pyrite

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MGR603836

Quartz & Pyrite

Description Tabs

Description
Locality: 
Panasqueira Mines, Covilhã, Castelo Branco District, Portugal
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 2.8 × 2.6 cm
Description

A remarkable, uncommon specimen from this famous locality. The quartz crystal shows exceptional luster and it is water-clear - you can see the pyrite crystals on the backside through the crystal! Three sides are covered with really sparkling golden pyrite crystals. hard to capture the mirror-like luster of both minerals with the camera, so please note that it is much better in person.

Mineral Data
What's on the rock

Quartz

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5