New Members Mrskatypoo Posted November 23, 2018 New Members Share Posted November 23, 2018 The files I have are too large, I’m hoping to be able to post more pictures in the thread. These items were found on the Jurassic coast in the uk. The item in this image is smooth and solid, albeit there are parts of it broken off, it was whole when we found it. Link to comment Share on other sites More sharing options...
New Members Mrskatypoo Posted November 23, 2018 Author New Members Share Posted November 23, 2018 Another angle Link to comment Share on other sites More sharing options...
New Members Mrskatypoo Posted November 23, 2018 Author New Members Share Posted November 23, 2018 Inside Link to comment Share on other sites More sharing options...
New Members Mrskatypoo Posted November 23, 2018 Author New Members Share Posted November 23, 2018 Here is the other ‘fossil’ we found. This one has a texture like sandstone, it feels rough and crumbly. I’m really not sure on this one! Link to comment Share on other sites More sharing options...
New Members Mrskatypoo Posted November 23, 2018 Author New Members Share Posted November 23, 2018 Another angle Link to comment Share on other sites More sharing options...
New Members Mrskatypoo Posted November 23, 2018 Author New Members Share Posted November 23, 2018 And another Link to comment Share on other sites More sharing options...
FranzBernhard Posted November 23, 2018 Share Posted November 23, 2018 Hello and welcome to the forum! The first one looks like a septarian nodule. The second one looks like sandstone concretions, that have been grown together. But I can not exclude that these are iron sulfide concretions or contain some iron sulfides (cementing the sand grains together), that are on the way of rotting away. Does the second one have a special smell? None of them are fossils by itself, but concretions can form around a fossil. Franz Bernhard 5 Link to comment Share on other sites More sharing options...
New Members Mrskatypoo Posted November 23, 2018 Author New Members Share Posted November 23, 2018 1 minute ago, FranzBernhard said: Hello and welcome to the forum! The first one looks like a septarian nodule. The second one looks like sandstone concretions, that have been grown together. But I can not exclude that these are iron sulfide concretions or contain some iron sulfides (cementing the sand grains together), that are on the way of rotting away. Does the second one have a special smell? None of them are fossils by itself, but concretions can form around a fossil. Franz Bernhard Hi and thanks for your reply! Yes the second one does seem to have a sort of metallic smell, a bit like old wet pennies! The sand grain thing would make sense, it’s very grainy haha! Link to comment Share on other sites More sharing options...
Alexander D.G Posted November 23, 2018 Share Posted November 23, 2018 The second rock does look a lot like a concretion, it isent a fossil but looks cool nonetheless! 1 Link to comment Share on other sites More sharing options...
New Members Mrskatypoo Posted November 23, 2018 Author New Members Share Posted November 23, 2018 Thanks! We found them a few years ago and my curiosity got the better of me! The first one is very heavy for its size. Very cool indeed. Link to comment Share on other sites More sharing options...
Pemphix Posted November 23, 2018 Share Posted November 23, 2018 32 minutes ago, FranzBernhard said: Hello and welcome to the forum! The first one looks like a septarian nodule. The second one looks like sandstone concretions, that have been grown together. But I can not exclude that these are iron sulfide concretions or contain some iron sulfides (cementing the sand grains together), that are on the way of rotting away. Does the second one have a special smell? None of them are fossils by itself, but concretions can form around a fossil. Franz Bernhard Yup, i agree to that. Link to comment Share on other sites More sharing options...
FranzBernhard Posted November 23, 2018 Share Posted November 23, 2018 34 minutes ago, Mrskatypoo said: Yes the second one does seem to have a sort of metallic smell So it contains some iron sulfides (pyrite and/or marcasite). How much? --> Is it heavy for its size? Heavier than a normal rock (limestone, shale, granite) of approximate the same size? Interesting, that the first one is heavy for its size. It does not have the typical surface weathering of a siderite (iron carbonate) concretion, but it may contain some siderite. And it can not be totally excluded that the cracks are filled with barite (barium sufate), which is quite heavy. Does the crack fillings of the sepatarian nodule fizz with vinegar? But I am sure that there is someone on this forum who is familiar with this type of sepatarian nodules ! Franz Bernhard 1 Link to comment Share on other sites More sharing options...
FossilsAnonymous Posted November 23, 2018 Share Posted November 23, 2018 @Mrskatypoo I agree with the others on nodules. They are really cool rocks though! On The Hunt For The Trophy Otodus! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now