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Matthew Myerscough
Few fossils from Penarth.  Thanks for interest.

Left to right, ?coprolite, Plesiosaur vert, interesting shell

20200830_180450.jpg 
Also found this vert in a small rock, need to get some prep tools!
20200830_180503.jpg 
Spotted this other Ichthyosaur vert and ?paddle bone also in big slab.  Managed to go back another day and get fossils out without breaking.  Couldn't see anything else in this lump, managed to turn it over and just shells visible.
20200831_174216.jpg  20200831_173955.jpg  20200831_174023.jpg  Thinking of leaving the vert in original matrix, as below, but with a little stand.  The rock matrix is very thin, if I soak this in Paraloid B72 mix perhaps a good idea?  Thanks20200901_190630.jpg 
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prep01
The last one only needs Paraloid if you think it is pyritised and then only use 5%5 and only on the fossil.
Colin Huller
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Narlgoth
I think that first one is just an Iron/Pyrite Nodule. If its Coprolite remains of the creature's diet should be visible to give it away. Its more likely to be a poop shaped rock though..
- Brad
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Matthew Myerscough
Thanks for replies both.

Brad - yes I think you are correct, probably just a poo shaped rock!  No evidence of anything eaten anyway.

Colin - not sure I fully understand sorry.  For fossil bones in my collection I had planned to soak in water for a few days to remove salt, and then soak in Paraloid B72 dissolved in Acetone (5% w/v), and then air dry.  Would you normally only recommend this for pyritised fossils (to protect against pyrite disease?).  Some of fossils are quite crumbly on edges, so wanted something to strengthen them up a bit.

Many thanks

Matthew
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prep01
Yes, ALL fossils that might have absorbed salt shouls be desalinated, but you only need to use Paraloid on the actual fossil, not the matrix, but it does depend on the state of the fossil - it's up to you!
Colin Huller
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