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Sandstone Psm Calcite

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CLB113479

Sandstone Psm Calcite

Pseudomorph

Description Tabs

Description
Locality: 
Felsberghütte, Ziegelhausen, Karlsruhe, Baden-Württemberg, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.2 × 6 × 6 cm
Description

This unique specimen is a pseudomorph of a rock after a mineral - namely sandstone replacing scalenohedron crystals of calcite, originally grown in several layers (capped calcite) in the shape of a sphere. You can clearly see the outlines of this growth pattern. I know of no other locality for similar material. Very rare.

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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