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Quartz

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JYJ714957

Quartz

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Description
Locality: 
Monte Rosso, Castelnovo ne' Monti, Reggio Emilia Province, Emilia-Romagna, Italy
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4 × 1.8 cm
Description

Black quartz in dolomitic matrix. It is not a smoky quartz, because of the inclusion of bitumen that gives it the dark appearance. Comes with a label from 1983. Attractive assemblage!

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White
Labels
Label Images - only: Quartz