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Calcite Psm Fossil

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BMM659106

Calcite Psm Fossil

Description Tabs

Description
Locality: 
Atsimo-Andrefana, Madagascar
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10.7 × 8.8 × 1.6 cm
Description

Amazing calcite crystal lined cavities on this Cleoniceras ammonite from Madagascar. It’s been cut open and well-polished on one side to reveal the preserved inner detail. Some of the individual chambers are open and filled with a rich array of beige and brown calcite crystals, with the septa (divisions) between each chamber preserved as white calcite, making for a superb display piece.

Mineral Data
What's on the rock

Calcite

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