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Rock Crystal & Siderite

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NST700941

Rock Crystal & Siderite

Description Tabs

Description
Locality: 
Medel Gorge, Val Medel, Surselva Region, Grisons, Switzerland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 7.5 × 7 cm
Largest Crystal: 
3.20cm
Description

A combination of brillant, prismatic Rock Crystals and brown, lentile-shaped Siderites from Lukmanier Gorge. One main crystal is missing.

Mineral Data
What's on the rock

Rock Crystal

Variety Of: 

Quartz

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

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White