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Quartz Var Amethyst

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TBM826103

Quartz Var Amethyst

Classic Locality

Description Tabs

Description
Locality: 
Gavorrano Mine, Gavorrano, Grosseto Province, Tuscany, Italy
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 4 × 6.5 cm
Weight: 
98.00gr
Description

Weakly amethystine crystals up to 88 mm long , classic for this locality.

Mineral Data
What's on the rock

Quartz

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

Amethyst

Variety Of: 

Quartz

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