Crann Posted August 29, 2017 Share Posted August 29, 2017 Prepped by hand outwards in (minor) until I had the centre resdy, thought a few little taps with a small cold chisel would pop the centre up, nope, just chipping away, my ST pen will just bounce of this for sure, any other methods ? Nice sized specimen and hoping to view it in all it's glory. Link to comment Share on other sites More sharing options...
Ptychodus04 Posted August 29, 2017 Share Posted August 29, 2017 I've had some varied results removing pyrite with my CP9361. It complains a lot but will eventually take it off. If the pyrite formed on the surface of the ammonite, it will usually come off to some degree. If it formed as an outgrowth of the specimen, it often has totally destroyed the specimen and is part of it. What I'm trying to get at is the pyrite part of the matrix or totally bonded with the specimen? Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
JohnBrewer Posted August 29, 2017 Share Posted August 29, 2017 Pyrite is a complete nightmare. Hope you find a way around prepping it. John Map of UK fossil sites Link to comment Share on other sites More sharing options...
Crann Posted August 29, 2017 Author Share Posted August 29, 2017 33 minutes ago, Ptychodus04 said: I've had some varied results removing pyrite with my CP9361. It complains a lot but will eventually take it off. If the pyrite formed on the surface of the ammonite, it will usually come off to some degree. If it formed as an outgrowth of the specimen, it often has totally destroyed the specimen and is part of it. What I'm trying to get at is the pyrite part of the matrix or totally bonded with the specimen? I'm thinking the latter... don't want to get too heavy on it and have it shatter. Link to comment Share on other sites More sharing options...
Ptychodus04 Posted August 29, 2017 Share Posted August 29, 2017 16 minutes ago, Crann said: I'm thinking the latter... don't want to get too heavy on it and have it shatter. You're probably out of luck then. There's a good chance that even if it comes off, there's no detail below. Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
Crann Posted August 29, 2017 Author Share Posted August 29, 2017 20 minutes ago, Ptychodus04 said: You're probably out of luck then. There's a good chance that even if it comes off, there's no detail below. Suppose nothing to lose, worth a shot. Link to comment Share on other sites More sharing options...
Ptychodus04 Posted August 29, 2017 Share Posted August 29, 2017 42 minutes ago, Crann said: Suppose nothing to lose, worth a shot. It wont look any worse. I hate preps like that. Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
Crann Posted August 30, 2017 Author Share Posted August 30, 2017 9 hours ago, Ptychodus04 said: It wont look any worse. I hate preps like that. I will try the other side, no bulk on it but hopefully not Pyritised. Link to comment Share on other sites More sharing options...
Ptychodus04 Posted August 30, 2017 Share Posted August 30, 2017 2 hours ago, Crann said: I will try the other side, no bulk on it but hopefully not Pyritised. Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
RJB Posted August 30, 2017 Share Posted August 30, 2017 Ive only worked on ammo's with pyrite twice. Hated it both times. I hope you have better luck than I? RB Link to comment Share on other sites More sharing options...
Crann Posted August 30, 2017 Author Share Posted August 30, 2017 8 hours ago, Ptychodus04 said: Welll... started on other side then as I got closer to centre... pyrite ! Looks more friendly than the other side, will bash it another day... Link to comment Share on other sites More sharing options...
JohnBrewer Posted August 30, 2017 Share Posted August 30, 2017 That's a shame. However with what you've achieved it looks pretty nice anyway. If it were mine I'd leave as is. Is this the one you wanted a stand to display on? John Map of UK fossil sites Link to comment Share on other sites More sharing options...
Ptychodus04 Posted August 30, 2017 Share Posted August 30, 2017 That stinks. I personally hate pyrite in so many ways!! Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
Crann Posted August 30, 2017 Author Share Posted August 30, 2017 45 minutes ago, JohnBrewer said: That's a shame. However with what you've achieved it looks pretty nice anyway. If it were mine I'd leave as is. Is this the one you wanted a stand to display on? Hi, na it is this one... Link to comment Share on other sites More sharing options...
Ptychodus04 Posted August 30, 2017 Share Posted August 30, 2017 Now, that's a beauty. Regards, Kris Global Paleo Services, LLC https://globalpaleoservices.com http://instagram.com/globalpaleoservices http://instagram.com/kris.howe Link to comment Share on other sites More sharing options...
Coco Posted August 30, 2017 Share Posted August 30, 2017 Hildoceras ? Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
Crann Posted August 30, 2017 Author Share Posted August 30, 2017 16 minutes ago, Ptychodus04 said: Now, that's a beauty. Sure is, Wikipedia says maximum size 7.9" but this is coming in around 10", would have been a big fella. 15 minutes ago, Coco said: Hildoceras ? Coco Pyrite Ammonite is Hildoceras yea. Link to comment Share on other sites More sharing options...
Ludwigia Posted August 30, 2017 Share Posted August 30, 2017 48 minutes ago, Crann said: Sure is, Wikipedia says maximum size 7.9" but this is coming in around 10", would have been a big fella. Wikipedia is not always correct. I know of specimens reaching 20" and more. They loved the deep sea when they reached this size and are one of the longest living ammonite genuses. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Crann Posted August 30, 2017 Author Share Posted August 30, 2017 6 minutes ago, Ludwigia said: Wikipedia is not always correct. I know of specimens reaching 20" and more. They loved the deep sea when they reached this size and are one of the longest living ammonite genuses. Wish I could travel back in time to view the ancient world. Link to comment Share on other sites More sharing options...
Ludwigia Posted August 30, 2017 Share Posted August 30, 2017 Just now, Crann said: Wish I could travel back in time to view the ancient world. Me too. Just have to settle for a lot of research reading instead. Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
JohnBrewer Posted August 31, 2017 Share Posted August 31, 2017 That's a stunner! John Map of UK fossil sites Link to comment Share on other sites More sharing options...
Wrangellian Posted August 31, 2017 Share Posted August 31, 2017 Too bad about the pyrite... It seems a lot (all?) of these Yorkshire ammos have pyrite inside the shell, but is it common to have it on the outside as well? How well do these specimens hold up in storage/displays if you don't treat the pyrite (internal or external) somehow? Link to comment Share on other sites More sharing options...
JohnBrewer Posted August 31, 2017 Share Posted August 31, 2017 38 minutes ago, Wrangellian said: Too bad about the pyrite... It seems a lot (all?) of these Yorkshire ammos have pyrite inside the shell, but is it common to have it on the outside as well? How well do these specimens hold up in storage/displays if you don't treat the pyrite (internal or external) somehow? Not had any Yorkshire ammonites with pyrite myself. The Jurassic coast (Charmouth and Lyme Regis) on the other hand..... might have been lucky tho! John Map of UK fossil sites Link to comment Share on other sites More sharing options...
Wrangellian Posted August 31, 2017 Share Posted August 31, 2017 None with pyrite on the outside I assume you mean... I've got 2 Whitby ammos where the inside of the shell is filled with pyrite, or something pyrite-coloured, anyway. (none on the outside) Link to comment Share on other sites More sharing options...
JohnBrewer Posted September 1, 2017 Share Posted September 1, 2017 22 hours ago, Wrangellian said: None with pyrite on the outside I assume you mean... I've got 2 Whitby ammos where the inside of the shell is filled with pyrite, or something pyrite-coloured, anyway. (none on the outside) None in or out. I've been lucky I guess John Map of UK fossil sites Link to comment Share on other sites More sharing options...
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