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JasonMc89
F9AC30D3-E117-4A9C-B536-ECF2BDD0BE83.jpeg  8E833E08-DC26-4738-8930-C5151739553A.jpeg  466B87EA-EA50-40DF-8387-26A0B1D270E0.jpegFound this at Walton-on-the-Naze. Any idea what it could be!?

Thanks.
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prep01
Hello Jason, this looks like the partial (? flint) infill of a burrow which has been bored by modern sea animals - possibly Piddock bivalves on the outside. It may also contain part of a fossilised sponge by the look of the section. but I am not sure about that.
Colin Huller
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JasonMc89
prep01 wrote:
Hello Jason, this looks like the partial (? flint) infill of a burrow which has been bored by modern sea animals - possibly Piddock bivalves on the outside. It may also contain part of a fossilised sponge by the look of the section. but I am not sure about that.


So I decided to try and see what’s inside, and this is what I got. It broke across a couple of times so I’ve glued it back together. 21AD5AEE-6EC7-4CDB-84B0-80B3DC9B66C7.jpeg  C628F972-BB3B-4739-8A46-792FDCC1ECE6.jpeg 
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prep01
Hello Jason, this is a burrow infill but not flint I can't say any more I'm afraid.
Colin Huller
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JasonMc89
prep01 wrote:
Hello Jason, this is a burrow infill but not flint I can't say any more I'm afraid.


Thanks for your help! Thought that’s what it might be when I saw inside. 
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Gary W
Looks quite like the phosphatic burrows from the London clay
Gary
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prep01
Hi Gary, I agree, but I ain't a geologist and don't have it in my hand to do chemical tests.
Colin Huller
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JasonMc89
prep01 wrote:
Hi Gary, I agree, but I ain't a geologist and don't have it in my hand to do chemical tests.


A few of my London clay finds have developed a white powdery coveting on them. Does this mean I need to seal them? Cheers.
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prep01
Hi Jason, London clay fossils are quite often Pyritised an ALL fossils should be desalinated from a beach collection situation with pyritised ones needing to be kept dry and kept in sealed containers with indicator Silica gel and regular examination for Pyrite decay. There are loads of articles on this subject.
Colin Huller
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