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Quartz

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Quartz

Description Tabs

Description
Locality: 
Osilo, Sassari Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
14.1 × 7 × 6 cm
Largest Crystal: 
2.20cm
Description

some purple amethist from this famous sardinian locality

Mineral Data
What's on the rock

Quartz

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