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Quartz & Calcite

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ESM856820

Quartz & Calcite

Description Tabs

Description
Locality: 
Freisen, Sankt Wendel, Saarland, Germany
Class: 
Combination
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 8 × 6 cm
Description

A quartz geode lined with sharp calcite crystals

Mineral Data
What's on the rock

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Calcite

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