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Quartz On Calcite

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MEX500811

Quartz On Calcite

ex Barbara collection

Description Tabs

Description
Locality: 
Rohdenhaus Quarry, Rohdenhaus, Niederberg Area, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.9 × 1.6 × 1.3 cm
Description

High transparent quartz crystals on calcite crystals.  The quartz grown with lower temperature on calcite. Calcite isn't naturally etched.
 

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