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REMARKABLE IRONSTONE CONCRETION WITH FOSSIL 'HEART COCKLES'

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IRONSTONE CONCRETION WITH FOSSIL 'HEART COCKLES'
  
A remarkable specimen showing fossilised bivalve molluscs in cross section, giving the appearance of hearts. It is from an old collection and its provenance is not known.

It is an ironstone concretion, or septarian nodule, which has been cut in half and the surface polished, revealing the calcite shells of bivalves in section, together with calcite-filled fissures. There are also some patches of pyrite.

These extinct bivalves are related to the modern ‘heart cockle’ which is roughly heart-shaped, which gives them their common name.

This specimen is truly unique and a real geological curiosity.

Presented in a lidded gift box. There are some minor scratches on the polished surface (see photos). 

Click on a picture for a larger image

Size: approx. 16 x 11 x 2.5 centimetres
Weight: 734 grams

Optional metal stand (£1)

PRICE: £135.00
Sorry, this item has been sold or is out of stock