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Amethyst & Anhydrite

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Amethyst & Anhydrite

Description Tabs

Description
Locality: 
Iraí, Rio Grande do Sul, Brazil
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
15 × 11 × 4 cm
Description

A quartz and amethyst blade hosting white anhydrite crstals

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

Anhydrite

Formula: 
CaSO4
Strunz: 
7.AD.30
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 3.5
Type Locality: 
Salt mine, Hall valley, Hall, Innsbruck, Inn valley, North Tyrol, Tyrol, Austria