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  1. Manticocerasman

    Bactrites sp.

    I've been cleaning up a few boxes with devonian fossils from the past few months and came around this nice little fellow. I cleaned him up and gave him a paraloid treatment to preserve the pyrite. It is a complete specimen of a Bactrites sp. from the Matagne shales ( Frasnian, late Devonian ) from Belgium, both phragmocone and body chamber are preserved. They are a little unusual, as the do not belong to the nautiloids as his first appearance might suggest but they have their own subclass and are considered to be the ancestors of the ammonids ( they have a ventral syphuncle like all
  2. Alexander D.G

    Pyritised wood

    Hi everyone, wanted to show off this piece i found a few months ago in Normandy, France. Far from an expert but as far as i could tell it's a piece of wood that turned into charcoal and where the bark pyritised, it's about 7cm tall. Had trouble finding similar specimens online, is this a common occurance? (The wood part is very shiny because i had to glue it because it started to become very cracked and unstable after a few months)
  3. Hi all, A couple of years ago I acquired a lovely pair of plesiosaur propodial bones from Lyme Regis. It was a matched pair of both humerus and femur. Today, when I was looking to make space in my cabinet for a new acquisition I had made, I discovered some odd dust next to the humerus that, on inspection and to my horror turned out to be pyrite bloom! I immediately removed the specimen from the cabinet, checked the other podial and nearby fossils, and used a tooth brush to brush of the most direct traces of pyrite decay. But the question is: what now? How do I ensure the propodial's prese
  4. Hi all, I recently decided to buy the below plesiosaur vertebra after having seen it for a long, long time. It dates to the Callovian of the Oxford Clay and was found at Peterborough. I suspect it may be attributed to Muraenosaurus leedsi, as it comes from a cryptoclidid plesiosaur, but is both larger and more elongate that the typical Oxford Clay Cryptoclidus vertebrae I'm familiar with. Supposedly coming from an old collection, it has a blackened exterior that doesn't cover the entire piece, with the more common buff colour visible underneath. As such, I expecte
  5. Alexander D.G

    Stoping pyrite's disease

    Ik know this isn't a fossil but i thought people probably have experience with pyrite here so i though i'd give it a shot. I've had this piece for a year or so and as you can see it's corroding pretty bad on top, is there a way of stopping the corrosion once it has begun? If not i'll try to cut off the bottom half so that that might survive.
  6. minnbuckeye

    Pyrite disease

    Simple question. Would the application of Butvar B-76 prevent pyrite disease??????? I hope so. I just applied some to the pyrite I collected from the Pella beds, Pennsylvanian of Iowa.
  7. cngodles

    A plant in limestone?

    This one has been sitting in my "interesting but I have no clue" pile for a while. When I found it, I was splitting limestone laying in the stream. I've found that when you split limestone, immediately after splitting you'll get a couple moments of a sharp looking specimen before things start to oxidize. The limestone is a very dark gray, or almost black color. You either see black limestone or white calcite pieces while splitting. I split this particular piece open and right in the middle was a 3-4 cm long, 8 mm wide gold looking rectangle in the middle of the flat broken limeston
  8. Barrelcactusaddict

    Dominican Amber (La Toca Fm., 20.43-13.65 Ma)

    From the album: Fossil Amber from Around the World

    Dominican amber from the La Cumbre Mine, from the Cordillera Septentrional. Most pieces range from 5-10g in weight, with at least one containing a large two-phase inclusion (enhydro). Material from this mine frequently presents exterior crusts/aggregates of pyrite (iron sulfide); these were likely formed in a reducing, marine/lacustrine environment, where marine sediments, organic detritus, volcanic material (i.e., ash), and sulfate-reducing bacteria helped to provide the sulfides and iron needed.

    © Kaegen Lau

  9. chatping

    Minster, Isle of Sheppey Oct 2021

    Hi guys Went over to Sheppey yesterday to see what I could find... I'm a total novice, so I tend to pick up anything with an interesting shape and/or texture. Found some pyritised wood/twigs, a bit of crab in a phosphatic nodule, a little gastropod and some very round seed pods. The following pics are of the ones I had trouble figuring out due to their shapes resembling other things. Any clues would be great! Thanks ONE I'd like to think it's some kind of pointy reptile scute, but from my browse online it's possibly a pyritised seed husk? 3rd pic shows the dep
  10. Cheesestraw4

    Any ideas?

    Anyone any ideas on this? I picked this up because the multiple ridges and shape was interesting. Now I’m home I’m more and more intrigued by it. Was laying at the cliff base.
  11. RuMert

    Pyritized echinoid spine

    From the album: Late Jurassic echinoderms of European Russia

    Ulyanovsk Oblast, Kimmeridgian, 2 cm
  12. hrguy54

    Sylvania brachs

    I was in Sylvania OH this weekend and among many other pieces, I found these. I finished prepping them as soon as I could. The first is a pyrite paraspirifer bownockeri.....it is perfect, not a blemish or chip. This one is a paraspirifer (I think) but different. About 2 inches across. Has a few flaws. Then there is another pyrite bownockeri, same size as the first one, nearly perfect but for a chipped "wing" and a hole. But the hole exposes that it is also a geode....containing calcite I believe. I've never seen or heard of a geodized pyri
  13. pachy-pleuro-whatnot-odon

    From Westbury-on-Severn with pyrite

    Hi all, I recently acquired the below fossil, a pair of articulated jaws, purportedly from Pachystropheus rhaeticus, still with teeth, found at Garden Cliff/Westbury-on-Severn. Whether I wasn't paying proper attention when I bought it or just hoping there wouldn't be any pyrite on the piece, when I received the specimen it turned out that there are quite numerous pyrite-crystals growing to the side of the fossil. As it's quite an unusual piece that I'd rather like to keep, I'm now looking for people with experience with pyrite from the Garden Cliff location. In essence, I'd like to
  14. Hey everyone, So this summer, like most summers, my family went to my grandpa's holiday house in southern France. Seeing that we had many days with nothing planned, I managed to convince them to go fossil hunting one day. At first, I wanted to go to Lacoste, a place known for its echinoids and gorgeous white scallops, but it turns out these quarries are no longer accessible. So instead we went to Carniol, which was a little further away. After only a few hours in the car we arrived at the village of Carniol. "Village" would still be considered being generous: there are no more tha
  15. Chris finner

    Pyrite

    Hi, I was going to bin this but then started poking at it and started to find a lair of pyrite just under the surface... when I’ve seen pyrite before it’s never been so “solid” as this.. do you think it’s works further work???
  16. Calli99

    Yorkshire Ammonite ID

    Hi guys, I’ve done a bit of prepping of this ammonite I found in Salwick Bay, Yorkshire a few weeks ago and have no idea what it is. There are two obvious tubercles and there may have been more but as you can see it isn’t in great shape..
  17. Rubykicks

    What is going on here?

    Found this at the Monroe Reservoir in Indiana on Monday. Looks like a brachiopod made of pyrite? Or is it more likely a cast?
  18. Back in Oct. the Dayton Gem and Mineral Society had a field trip to the St Paul Stone Quarry in IN. Waldron shale. I've been slowly prepping my finds (along with other stuff) and finally completed my task. By far the most different piece I've found in a long time....a Rafinesquina-type brach covered in a bryozoan, with a Calymene face sitting on top, surrounded by pyrite. Size = 1.5" W x 1" D x 1" T. A complete, 3/4 prone Calymene. About 1.25" long. Some complete gastropods, all whose brown "shell" is pyrite. Some gastropods that are
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