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Calcite & Petroleum

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RHT661769

Calcite & Petroleum

Classic Locality

Description Tabs

Description
Locality: 
Rollenberg Railway Tunnel, Bruchsal, Baden-Württemberg, Germany
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.2 × 4.4 × 3.7 cm
Description

A nice vug, filled with dark brown calcite scalenohedrons, colored by natural petroleum (oil). A specimen  from the Rollenberg tunnel - a locality that provided little material only for a very short period during its construction.

Rare specimen.

Mineral Data
What's on the rock

Calcite

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