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Calcite On Rock Crystal

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CR786485

Calcite On Rock Crystal

Description Tabs

Description
Locality: 
Griesseren Valley, Maderanertal, Uri, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.8 × 6.5 × 6 cm
Description

A fantastic and hard to find specimen of beautiful calciote crystals of a pseudohexagonal outline (Kanonenspat) on gemmy rock crystals.

Beautiful specimen from Hoffmann collection.

Mineral Data
What's on the rock

Calcite

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

Rock Crystal

Variety Of: 

Quartz

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