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Amethyst Quartz & Calcite

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SMM714896

Amethyst Quartz & Calcite

Description Tabs

Description
Locality: 
Crastu Muradu Quarry, Osilo, Sassari Province, Sardinia, Italy
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 4 × 3 cm
Description

Nice sample of radials groups of sharp amethyst quartz on a carpet of green crystals of calcite.

Boxed with Label
Mineral Data
What's on the rock

Amethyst

Variety Of: 

Quartz

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

Quartz

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White
Not Sold

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