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Quartz

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SKI133956

Quartz

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Description
Locality: 
Macieira, Cerva, Ribeira de Pena, Vila Real District, Portugal
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4 × 2 cm
Largest Crystal: 
0.50cm
Description

Perfect pseudomorphs of quartz after ?. It is discussed to be after fluorite, scheelite or magnetite. From a roadwork close to the village of macieiria.

Mineral Data
What's on the rock

Quartz

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

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