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peatb

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On a recent fossil hunting trip to Runswick Bay I found this on the foreshore, Is it some kind of internal cast? It’s certainly odd and it’s not flint either. Any ideas? Thanks in advance

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Hydrangea

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Reply with quote  #2 

Hi Peatb - I don't think it is an internal cast, just an odd shaped nodule.

regards.

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Roy D.
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ginkgo

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Reply with quote  #3 
I echo Roy's opinion, especially so if the outer few millimeters is mineralised - for example with iron pyrites. (Hard to see from the photographs.) However all the nodules I've seen are rounded, (Ditto for any infilled burrows) so I can see why this caught your eye. 
John
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