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Amethyst & Calcite

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MGR725401

Description Tabs

Description
Locality: 
Rio Grande do Sul, Brazil
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
11.2 × 8.4 × 6.8 cm
Description

A crazy assemble of calcite (67mm across) in two generations attractively set on highly lustrous, dark violet amethyste crystals. Looks great in various positions, no significant damages to report.

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

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White