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Calcite & Amethyst

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MGR895207

Calcite & Amethyst

Classic Locality

Description Tabs

Description
Locality: 
Juchem Quarry, Niederwörresbach, Herrstein, Birkenfeld, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.3 × 8.5 × 7.3 cm
Description

A huge, sharp terminated caclite crystal set in a half-geode of amethyste. This dimension (90mm crystal size) is really exceptional for this famous classic locality and specimen in this size and quality are out-standing and hard to obtain. The faces of the main crystal conist of tiny micor steps, all of them partly glossy. The amethyste crystals are sharp an lustrous, the assemble looks very aesthetic. First photo was done with moderately back-light, the second one under daylight.

Mineral Data
What's on the rock

Calcite

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

Amethyst

Variety Of: 

Quartz

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