Jump to content

Search the Community

Showing results for tags 'fossil prep'.



More search options

  • Search By Tags

    Type tags separated by commas.
    Tags should be keywords or key phrases. e.g. carcharodon, pliocene, cypresshead formation, florida.
  • Search By Author

Content Type


Forums

  • Fossil Discussion
    • General Fossil Discussion
    • Fossil Hunting Trips
    • Fossil ID
    • Is It Real? How to Recognize Fossil Fabrications
    • Partners in Paleontology - Member Contributions to Science
    • Questions & Answers
    • Fossil of the Month
    • Member Collections
    • A Trip to the Museum
    • Paleo Re-creations
    • Collecting Gear
    • Fossil Preparation
    • Member Fossil Trades Bulletin Board
    • Member-to-Member Fossil Sales
    • Fossil News
  • Gallery
  • Fossil Sites
    • Africa
    • Asia
    • Australia - New Zealand
    • Canada
    • Europe
    • Middle East
    • South America
    • United States
  • Fossil Media
    • Members Websites
    • Fossils On The Web
    • Fossil Photography
    • Fossil Literature
    • Documents

Blogs

  • Anson's Blog
  • Mudding Around
  • Nicholas' Blog
  • dinosaur50's Blog
  • Traviscounty's Blog
  • Seldom's Blog
  • tracer's tidbits
  • Sacredsin's Blog
  • fossilfacetheprospector's Blog
  • jax world
  • echinoman's Blog
  • Ammonoidea
  • Traviscounty's Blog
  • brsr0131's Blog
  • brsr0131's Blog
  • Adventures with a Paddle
  • Caveat emptor
  • -------
  • Fig Rocks' Blog
  • placoderms
  • mosasaurs
  • ozzyrules244's Blog
  • Sir Knightia's Blog
  • Terry Dactyll's Blog
  • shakinchevy2008's Blog
  • MaHa's Blog
  • Stratio's Blog
  • ROOKMANDON's Blog
  • Phoenixflood's Blog
  • Brett Breakin' Rocks' Blog
  • Seattleguy's Blog
  • jkfoam's Blog
  • Erwan's Blog
  • Erwan's Blog
  • Lindsey's Blog
  • marksfossils' Blog
  • ibanda89's Blog
  • Liberty's Blog
  • Liberty's Blog
  • Back of Beyond
  • St. Johns River Shark Teeth/Florida
  • Ameenah's Blog
  • gordon's Blog
  • West4me's Blog
  • West4me's Blog
  • Pennsylvania Perspectives
  • michigantim's Blog
  • michigantim's Blog
  • lauraharp's Blog
  • lauraharp's Blog
  • micropterus101's Blog
  • micropterus101's Blog
  • GPeach129's Blog
  • nicciann's Blog
  • Olenellus' Blog
  • nicciann's Blog
  • maybe a nest fossil?
  • Deep-Thinker's Blog
  • Deep-Thinker's Blog
  • bear-dog's Blog
  • javidal's Blog
  • Digging America
  • John Sun's Blog
  • John Sun's Blog
  • Ravsiden's Blog
  • Jurassic park
  • The Hunt for Fossils
  • The Fury's Grand Blog
  • julie's ??
  • Hunt'n 'odonts!
  • falcondob's Blog
  • Monkeyfuss' Blog
  • cyndy's Blog
  • pattyf's Blog
  • pattyf's Blog
  • chrisf's Blog
  • chrisf's Blog
  • nola's Blog
  • mercyrcfans88's Blog
  • Emily's PRI Adventure
  • trilobite guy's Blog
  • xenacanthus' Blog
  • barnes' Blog
  • myfossiltrips.blogspot.com
  • HeritageFossils' Blog
  • Fossilefinder's Blog
  • Fossilefinder's Blog
  • Emily's MotE Adventure
  • farfarawy's Blog
  • Microfossil Mania!
  • A Novice Geologist
  • Southern Comfort
  • Eli's Blog
  • andreas' Blog
  • Recent Collecting Trips
  • retired blog
  • Stocksdale's Blog
  • andreas' Blog test
  • fossilman7's Blog
  • Books I have enjoyed
  • Piranha Blog
  • xonenine's blog
  • xonenine's Blog
  • Fossil collecting and SAFETY
  • Detrius
  • pangeaman's Blog
  • pangeaman's Blog
  • pangeaman's Blog
  • Jocky's Blog
  • Jocky's Blog
  • Kehbe's Kwips
  • RomanK's Blog
  • Prehistoric Planet Trilogy
  • mikeymig's Blog
  • Western NY Explorer's Blog
  • Regg Cato's Blog
  • VisionXray23's Blog
  • Carcharodontosaurus' Blog
  • What is the largest dragonfly fossil? What are the top contenders?
  • Hihimanu Hale
  • Test Blog
  • jsnrice's blog
  • Lise MacFadden's Poetry Blog
  • BluffCountryFossils Adventure Blog
  • meadow's Blog
  • Makeing The Unlikley Happen
  • KansasFossilHunter's Blog
  • DarrenElliot's Blog
  • jesus' Blog
  • A Mesozoic Mosaic
  • Dinosaur comic
  • Zookeeperfossils
  • Cameronballislife31's Blog
  • My Blog
  • TomKoss' Blog
  • A guide to calcanea and astragali
  • Group Blog Test
  • Paleo Rantings of a Blockhead
  • Dead Dino is Art
  • The Amber Blog
  • TyrannosaurusRex's Facts
  • PaleoWilliam's Blog
  • The Paleo-Tourist
  • The Community Post
  • Lyndon D Agate Johnson's Blog
  • BRobinson7's Blog
  • Eastern NC Trip Reports
  • Toofuntahh's Blog
  • Pterodactyl's Blog
  • A Beginner's Foray into Fossiling
  • Micropaleontology blog
  • Pondering on Dinosaurs
  • Fossil Preparation Blog
  • On Dinosaurs and Media
  • cheney416's fossil story
  • jpc
  • Red-Headed Red-Neck Rock-Hound w/ My Trusty HellHound Cerberus
  • Red Headed
  • Paleo-Profiles
  • Walt's Blog
  • Between A Rock And A Hard Place
  • Rudist digging at "Point 25", St. Bartholomä, Styria, Austria (Campanian, Gosau-group)
  • Prognathodon saturator 101

Calendars

  • Calendar

Categories

  • Annelids
  • Arthropods
    • Crustaceans
    • Insects
    • Trilobites
    • Other Arthropods
  • Brachiopods
  • Cnidarians (Corals, Jellyfish, Conulariids )
    • Corals
    • Jellyfish, Conulariids, etc.
  • Echinoderms
    • Crinoids & Blastoids
    • Echinoids
    • Other Echinoderms
    • Starfish and Brittlestars
  • Forams
  • Graptolites
  • Molluscs
    • Bivalves
    • Cephalopods (Ammonites, Belemnites, Nautiloids)
    • Gastropods
    • Other Molluscs
  • Sponges
  • Bryozoans
  • Other Invertebrates
  • Ichnofossils
  • Plants
  • Chordata
    • Amphibians & Reptiles
    • Birds
    • Dinosaurs
    • Fishes
    • Mammals
    • Sharks & Rays
    • Other Chordates
  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

Found 59 results

  1. Newbie gets an air tool

    The Paliotool ME-9100 arrived today and had the 1 1/2 engraver scribe on it. A quick change of connectors, a hose connected to my clean air source in the shop's paint booth and down to the pailoipaver part of the garden to get a couple of practice victims, I mean specimens. I won't talk about the first two except that they were pretty heavily fractured before I started in on them. Just know that they gave their best in the name of science and may they rest in peace. I picked a more robust one and stared in to clean up the center with better results although I don't think there should be a hole in the center. From this initial try found I will need better light and a support for the tool as it get to be tiresome after a session especially since I also worked today. Also magnification as I learn what detail to watch for. This one was happily returned to the paloipaver collection in the garden to live another day!
  2. Hello all, I am setting up my comco dual tank micro blaster and I may be adding a second single tank micro blaster for three different blasters in my cabinet and I wanted to know what media others are running with their setup.
  3. I recently completed my first fossil prep. Woohoo! As a novice, I did a lot of reading and research; trying to piece together exactly what I was supposed to do. How exactly I was supposed to "prep" the fossil and what that process entailed. While I found a wealth of information here on TFF, and other avenues, that information took a while for me to uncover and assemble into something useful. Not that the information itself wasn't useful, but uncovering a bit of info would often cause even more questions to arise. Consequently, it sometimes felt like taking 1 step forward but 3 steps back at the same time. So here is a novice guide, written by a novice, for other novices. It is intended for someone trying to figure out how to get started in Manual Fossil Preparation. The following information is what I feel is the basics of getting started in prep work based on my observations, research, and very limited experience. A quick guide to help get someone started who has been wondering what to do, but hasn't quite figured out where to start yet. Hopefully this will open up the wonderful world of fossil preparation for a few more people. What is Fossil Preparation? Fossil Preparation is the name given to the process of cleaning and repairing fossils. Making them more presentable for display, and revealing more diagnostic detail for study and research. Preparation at it's most basic form, is cleaning. Simply using a brush with water could be considered preparation. However, when most of us discuss fossil prep, it typically involves removing matrix. There are basically 3 ways to remove matrix from fossils. Using hand tools is generally referred to as manual preparation. Using power tools that require an air compressor, or electricity, is referred to as mechanical preparation. The third option is chemical preparation. Which, as the name implies, is using chemicals to prepare a fossil. Typically by dissolving matrix. Most people use one, two, or a combination of all three methods. I chose to focus on Manual Preparation. In my opinion, it is the cheapest, easiest, and the most forgiving form to start with. This is where most people tend to begin their prep journey. The process is pretty much the same with mechanical means. The more aggressive tools just make it go much faster. Which can lead to quicker results, but also quicker damage if done improperly. I figured it was better to cut my teeth on the cheaper, slower option, then upgrade tools if I liked it. I typically see “starter kit” recommendations for mechanical prep in the $800-$1000 USD range. You may get by with spending a little less, but it will still cost hundreds of dollars to get going. I spent less than $50 USD on my manual prep “starter kit” and you can get by with spending much less. Chemical prep can work well, and can be fairly cheap. A gallon of vinegar doesn't cost much... but it can VERY easily damage the fossil if you are not careful and don't know what you are doing. Proper precautions will need to be taken as well. Most chemicals used in fossil prep pose some sort of health hazard. Also, not all chemicals will work in all situations. What tools do you need to get started in Manual Prep? Anything that is sharp and can dig into the matrix that you want to remove. Seriously... Anything! There are people on TFF who started prepping with a wood nail, drywall screw, a push pin, and even a steak knife! That being said, there are definitely tools that will make life easier. Listed below are ones that I found the most helpful and personally used. Pin Vise* Magnification Lamp Dental picks Razor Knife** Brushs Sewing Needles Scribes (Sometimes referred to as Scribers) Scratch Awls Water *A word on Pin Vises... These are handy little gadgets, who's name is somewhat of a misnomer. While they are very useful for holding pins/needles and the like, they are typically sold as small hand drills, and can come with an assortment of micro drill bits. You will not need these drill bits for fossil prep, and if you can find a pin vise without the bits, it will usually cost less. They are sold by many hobby stores, or can be found online very easily. Simply put, they are handles with collets or chucks, used to hold very small things.You don't need a pin vise, but if you do purchase one, I would suggest a range of 0-.125 (1/8) inches or 0mm-3mm. This way you can hold the smallest of needles, and things up to the size of a standard rotary tool bit. Which is 1/8 inch or roughly 3mm. What you put in your pin vise will vary depending on what you are prepping, but I found that a scrib(er) or engraving tip for removing bulkier matrix, and a larger sewing needle worked rather well. They come in double ended forms, or you can usually find them cheap enough to buy more than one for quick switching between tips if you desire. **A word on Razor Knives... These are also known as hobby knives and are commonly referred to by a brand name that is rather “exact”. I had read people recommending to use these and how great they were to have around. I thought “Why use a razor blade on rock?” I didn't fully realize their use in fossil prep until I actually broke down and tried it. The tip of the knife can be used similar to a dental pick or needle and can slide between the layers of rock to pick it away or split it. I found that it could also be used to sculpt the matrix around the fossil. Sure it will dull quickly, but replacement blades are cheap, and it actually cut and planed the soft shale I was working with pretty well. I am sure there are more uses that I need to discover. Very handy and cheaply purchased. So... How do you actually prep? Well... You remove matrix without damaging the fossil. Things can happen, but this is the ultimate goal. First you use a larger tool to remove the bulk of the matrix. Depending on the size of excess matrix, you may be using a hammer and chisel for this, or you may use something like a scratch awl. My first prep was on a brachiopod valve so the scratch awl method worked well for me. I used the awl to pick and scratch at the matrix. Removing as much as I could, as quickly as I dared. Use a brush to get dust and debris out of your way. I used a small paint brush. Something that puffs air or even a little water can also work. Once you start to get closer to the fossil you will want to use something finer. When I got down fairly close, I switched over to a smaller scribe tip. When I was right next to the fossil I started using the sewing needle and dental picks. When you are right up against the fossil you will want to be very, very careful. Hopefully their will be a small gap between the matrix and the fossil. You can slide a dental pick, sewing needle, or tip of a razor blade in this gap and pick away the piece. Lifting it away from the fossil will hopefully cause it to flake off. If the matrix is more “sticky” you may need to painstakingly pick it off grain by grain. OK. Now you know how to prep, but what do you actually prep first? My advice is...Don't start with a nice, expensive, rare, or scientifically important specimen. Don't grab the one that you have just been dying to see revealed and start poking at it. There is a learning curve to prepping. The concept is simple, but in practice it is difficult. You WILL mess up. Especially on your first try. It happens. The needle slips and scratches. That piece of matrix that looked like it was going to break away cleanly took a piece of valve with it. Practice. Build up your skills and technique, then tackle that nice fossil. Your results will be much better and you will be happier with the outcome. Also, don't grab that big hash plate. Get something small that will give you a sense of completion in a few hours. A hash plate may take 10s or 100s of hours to complete. Starting with a small piece will give you a sense of completion and a much needed reward for your hard work and first try. If you collect fossils, I suggest getting something that is common to the area. Something that you might even currently pass over because they are everywhere. If you purchase your fossils, look for the same type of thing. Something that is common and not too expensive. Something that is a dime a dozen. Maybe even a fragment of a larger specimen that isn't worth much monetarily because it is broken. I would also suggest something that is relatively simple. Something with a lot of bones and pieces might throw you for a loop. Here are some Tips and Tricks that I learned just in my first few hours of prep work. Take your time! This is probably the most important tip I can give. Don't rush it. This process will take hours, not minutes. Even on something small like a brachiopod valve. I didn't time my first prep, but it took at least 4 hours. If you are tired, stop and give yourself a break. If you are frustrated with a piece that just doesn't seem to want to come off, move to another section to work on, and come back to it later. Rushing and frustrations cause mistakes. Magnification is very helpful. I would even say necessary. I used a magnification lamp. The magnification and light combo worked great for letting me see what I was doing. Especially when working close to the fossil. I have seen others who use those magnifying visors, or even a microscope. Keep your tools sharp. It sounds crazy I know. You are pushing these things into rock, and they will dull quickly, but they do work better when sharp. There is a noticeable use of less force when using a sharp tool. To borrow a philosophy from knife use... A sharp tool is a safe tool. Good lighting is a must. This goes hand in hand with magnification. If you can't see what you are doing, you can't prep. Wear proper safety equipment. Dust and flying debris is a real hazard. Even when using a tiny sewing needle. I would wear a dust mask and eye protection at the least. Gloves for protecting the hands from the errant dental pick/needle tip may come in handy as well. Know the morphology and/or anatomy of what you are trying to prep. You need to know what you are trying to dig out of the rock and what it looks like to avoid damaging the fossil or digging into the wrong place. The pieces and parts may not be where they are supposed to be, because of the nature of the fossilization process, but you need to have a good idea of what you are looking for. I wet the fossil from time to time. This isn't always an option depending on the fossil and matrix, but in my situation it helped wash away dust, bring out detail so I could better see what I was doing, and softened the matrix slightly, making it easier to prep. Stone is like wood, it has grain. Look for it and use it to your advantage. Picking and poking with the grain will typically yield better results that digging across or against it. Some things are not worth prepping. There I said it. Sometimes things will take way to long to prep, or are too delicate. You need to realize, and be ok with the fact, that some fossils, or part of a fossil, is better left alone. I'm sure I'll think of something else after posting... I hope this quick little guide will encourage other novices to try fossil prep. It is an enjoyable and rewarding aspect of the fossil obsession. Seeing something revealed for the first time in millions (sometimes hundreds of millions) of years has a distinctly wonderful feeling. Thanks to all those who helped get me going with their comments and suggestions in various threads. A special thanks to those that I PM'ed and asked questions of. You know who you are. Your knowledge and expertise were invaluable and greatly appreciated! Comments, corrections, and constructive criticisms are always welcome! Best of luck! Here is a link to my first prep that I referenced...
  4. I've been looking for hesperornis fossils for a while, and recently, an acquaintance presented me with a challenge: He would send me a bag of broken up hesperornis verts for me to assemble. In return, I had to send him the biggest and best vert back. He also warned me it could be a real headache. I took the challenge. Lo and behold! I was presented with over 60 broken pieces, some of which were tiny and terribly fragmented (not shown in picture) Nonetheless, I googled for pictures of hesperornis verts and put what limited knowledge I had on fossil assembly into this task. After 18 hours, this is what I got: All in all, it was a tiring but satisfying job and now I can happily say I am the proud owner of a chain of associated hesperornis verts
  5. Huntonia Eye Preparation

    I recently purchased another Huntonia oklahomae trilobite and am very pleased with it. However it does not have detailed eyes, I knew this when I purchased it but further inspection leads me to believe that the eyes are intact but have simply not been fully prepped. I am curious would it be possible to have the eyes professionally prepped to reveal the eye facets? If so what would be the risk of damaging the trilobite and approximately how much would it cost? Here is a picture, the trilobite does seem to be coated in some sort of clear coating, not sure if that makes a difference.
  6. I'm a little confused. On the forums I have read a number of times (at least I thought I did) that Elmers school glue cannot be removed from a fossil, once it has dried. But just for the sake of experimenting, I coated a small rock in elmers glue and let it dry. After it sat in the warm sun for awhile and was good and dried, I put it in water. And almost immediately, the glue softened up and turned white and sticky again. I let it soak for awhile and then washed it off. The Elmers glue washed right off. Did I miss something? Or an I experimenting with the wrong kind of glue? I know Elmers glue is not very recommended for coating fossils, but I just got curious and wanted to experiment. :-) So if anybody can fill me in, that would be great!
  7. I have recently begun my journey into fossil prep, i'm using a dremel electric engraver as it seemed to be the best cheap tool. I have several ammonites from Yorkshire within nodules - these are very hard in the centre and consist of pyritised sediment. It is taking a very long time with the dremel using tungsten-carbide point, so just asking for any advice on how is best to try and get through these very hard bits. Cheers in advance!!
  8. I found this 'geodized snail' in a 25lb lot of kentucky geodes I got off of online years ago. I'm going to call it a geodized snail till one of you corrects me because thats how the seller referred to it in the post. Again, I haven't really prepped a fossil up to this point but I've gathered some information from this forum! From what I've gathered an airscribe would be a good way to start? Would it be safe to attempt to chisel off the larger chunk of matrix?
  9. I've always been interested in fossils but I've never even thought of prepping some till I joined the forums. I have some plant dense rocks from washington that I think would be good practice, but I don't know the first step to this process. I have a dremel tool and hopefully I'm going out to get some new tips soon. It's shale as far as I can tell. Thanks for any and all advice, tips, steps, etc you guys are willing to give!
  10. Hello everyone , this is my first post on here so go easy on me lol. I just bought this Eopachydiscus and im waiting on it in the mail. Is there anything i can do to clean it up a little ? or do you think i sjhould just leave it as is? thanks for your time ! p.s -its 12 inches across if you needed an idea of size.
  11. Found this video on Youtube, and thought it was pretty ingenious. I like the DIY blaster box idea, as well. Thought it might be an option for those of us who cannot break the bank to do our own fossil prep. This has given me some ideas to try out. Hope this helps someone out. Good luck!
  12. Ceratopsian Parietal Spike

    Hey guys! So about four years ago, someone sold me a really cheap batch of unprepped fossils they dug up in the US; which included a large piece of rib bone (or so the seller thought). I started prepping the 'rib', and thought it looked a little strange. It had a tendon running along the bottom; which seemed weird as it was supposed to be a rib. However, I was still pretty new to fossil prep/ID, and I trusted the seller's ID better than my own. I wound up setting it on the shelf for...a couple years. Fast forward to about a week ago. I was cleaning out my fossil storage 'area' and I came upon this bone again. I again thought it didn't look much like a rib, and decided to google different kinds of dinosaur spikes. After scrolling through all kinds of ankylosaurs, stegosaurs, triceratops, etc. I came upon Styracosaurus. It bore a passing resemblance to the parietal spike on its frill, and I figured I better start prepping it. After prepping it, I was blown away. Not only does the bone have a tendon attached, but there are all kinds of subtle curvatures you couldn't see with the layer of dirt that had covered it. The texture is very unusual too, and the bone is actually really thin! The tip comes to a point and gradually twists. It's hard to describe, so I've included a bunch of pictures. Anyway, after researching more about the sub-family Centrosaurinae, I came across Rubeosaurus and Einiosaurus; which both have spikes that are EXTREMELY similar to the bone I have. If this thing is a rib I'll eat my foot. Please let me know what you think! Any thoughts are much appreciated. -Lauren
  13. Okay, I may not have been particularly thorough in my searching the forum, but I read a lot about pin vice's and rarely see any photos of them. I've accumulated enough material that I'd like to begin prepping&learning. I figure this will be one of those sideline hobbies whereby I can just pick and peck along in quiet solitude and hopefully fairly low expense as I build skills. Would those who use pin vices recommend or post a photo with some dimensions of their vices? I'm sure this is one of those situations where they can be too small or too big. Also, I have read about body piercing needles, hypodermic needles and sewing machine needles. Are there other such things I should be on the lookout for? Thank you, Kato
  14. Picked this rock up while fishing the river over the summer. Since it's to bloody cold to do anything outside I figured I would clean it up and see what all the bits and pieces are. I think it will be pretty when it's done, although some of the fossils are eroded. It's like where's Waldo? See anything?
  15. Hello everyone, I was wondering what tools people would recommend for fossil preparation, I am an absolute newbie in this area and am not familiar with what options there are out there but would really love to learn, so far I only have a pin vise which I have used on rough matrix removal but too scared to get close to the actual fossils. Thank you, Misha
  16. What type of microscope?

    I am looking for input on what type of microscope I should get for prepping fossils like trilobites, ammonites from Montana, and other fossils from the Midwest. What magnification I would need. Any suggestions would help me decide. I mainly use air scribes but have done some cleaning with picks.
  17. I am looking for something like rewoquat or a good substitute sold in the US, for breaking down shale and such?
  18. Help with udig quarry shale fossil

    Hi everyone, firstly I'll apologize for the poor quality pictures. These Fossil are tiny and it's hard to get a good exposure. These things which are in all the shale I brought back are like rounded objects. They will come out leaving the impression behind. One is 1/8th in and another is about half of that. If any one can help, I'd love to know. On the paper they gave us showing what we can find, there are brachiopods but these seem to all and not the right shape. paper has something called pyilocardia or something like that. Thank you
  19. Tips on cracking a Nodule?

    Hello everyone! Im just wondering if anyone has any tips on cracking a nodule open? Me and my geology hammer have taken a good whack at around the edges but all I’m getting is chipping and no splitting. My first time with a nodule. I found it on a trip to Lyme Regis. I’ve posted a picture of one of the chips with a few ammonites showing themselves. thanks for reading! Ryan
  20. New pin vice idea

    I've been using hypodermic needles in my pin vices for fossil prep which work GREAT. And maybe I've re-invented the wheel here, but I just discovered body-piercing needles! These are so much better and cheaper! $12.99 for a multi-size pack on Amazon. The shafts are much longer, too, which is great. Easier to acquire by most, also. Thought I'd share. Here's the $12.99 mixed-size pack I got.
  21. I found this ammonite on Saturday. It is the best Trachyscaphites springer I have ever found. I think it is a T. springer. I assume the other ones I have are males and maybe this one is a female. I don't know much about sexual dimorphism in this genus, but it does exist. When they say there is dimorphism is the female is bigger? It is so very different from any of the others I have. I know there is another species of Trachyscaphites in the NSR, but I don't know what it looks like. I really like this one though. It is free standing too! Bonus. It has some damage on the dorsal venter and the aperture. It also had some pyrite on the umbilicus area (I can’t really see an overt umbilicus since it is so involuted). My prep work is still very crude. There is so much I need to learn. I just keep at it and learn by trial and error though. I don’t have pneumatic tools. Here it is. See the white film on the right half? The white on the left half is nacre, but some of it has the film on it too. This is from the red zone of the Ozan formation, Cretaceous. I doubt it matters, but I am wondering if the film layer is pyrite in nature or gypsum or something else. I have specimens from the Britton formation of the Eagle Ford group, which have a gypsum film on them and this looks a bit little that. But that isn't my main question. It is just a curiosity. This is the other side. You can see some pyrite at the bottom left along the umbilicus grove. I have a number of these, but this is the first where I can actually see suture lines mostly at 11 to 12 o'clock down the midline and on the right. I am going to tag @Ptychodus04 and @RJB on this. I don't know if Ron is familiar with fossils of this matrial and matrix, but I imagine he is. I am pretty sure Kris is. Questions The film issue 1. Do you think I should attempt to remove the film? I think I should. See the tubercle by my thumb in pic 2? There was a tiny fleck of white showing so I chipped away at the red clay and revealed more nacre under it. So I believe there is still nacre under some of it on the left 2. What is the best way to go about removing it? I was thinking of using sandpaper, but I don't have much experience using sandpaper on fossils. I have a range of grit up to 3000 (or is it down to since the grit is smaller and finer?) The nose issue I am calling it the nose since it looks like a little nose. It seems to be the first part of the first visible whorl. 3. Any advice as to what to do with this part. I am not sure what to do with it. At times I prep haphazardly and then I think I have damaged it and I get paralysis of analysis and that is where I am on the nose. I have removed some matrix from the top, left and right. I think I might have gone down into the nose on the right side some. It is hard to tell where the matrix ends and fossil begins. These are other views of the nose. The lines on the nose are from me scraping away, thinking I was on top of ribs. I am not sure if there are ribs there yet. Like I said my prep skills are pretty crude still. The other side of it. I still have some matrix to removed on the side there. I think part of it is chipped away, but I am not totally sure how it is supposed to look. Maybe it got crushed. It just looks odd to me. I have several other of this species, but I think they may all be males or something. They are more open, the whorl does not cover the umbilicus and they are much flatter and smaller. The pyrite issue. I know I have asked these types of questions before about prep so sorry for the repeat. 4. What is the best way to address the pyrite to keep it from coming back? I have scraped most of it off already. I have heard people say to soak it in Iron Out and I have that. But I am concerned it may hurt the fossil. I guess I could experiment on other concretions I have that look like the same, but are rock and not fossil. 5. What should I do as far as long term preservation to slow the progress of pyrite disease? I think someone recommended Butvar. I looked into buying it, but I got sidetracked by trying to figure out which was best. Then couldn't find what was best and kind of forgot about buying again. 6. What is the best Butvar or product to use for sealing it? I looked at buying some on different sites. Paying so much for shipping irks me. I am spoiled with Amazon Prime and just don't think about shipping costs. I have a buddy who works at Eastman. I asked him if they had a store where individuals could purchase products like Butvar 76. He said no, but he would see if he could go ask for a sample The museum supply site. It has Butvar-80 for $34 for 1 kg and $15.53 for shipping. I don’t need 1 kg. Talas has Butvar-76 500 g for $17.50, but then is charging $14.64 for shipping! I have seen people reference McGean-15 or Vinac and they seemed to prefer it over Butvar. 7. Can anyone tell me the molecular weight of the Vinac or what grade of polyvinyl acetate Vinac is? I think my buddy could come up with that for me more easily since I think he manages production of a form of it. I found something called Vinapas. I have not looked at the shipping on this site. Here: http://www.conservationresources.com/Main/section_37/section37_08.htm PVA Resin Solid Vinapas This consolidant is a polyvinyl acetate solid suspended in granular form, with a molecular weight averaging 51,000 and a melting point of 50 C. It is used as a consolidantfor porous, dry, non-metal objects-particularly those found in digs. This is typically applied in concentrations of 20-25% I.M.S. with a soft brush. It may also be used as an isolating varnish and thermoplastic adhesive. Item # Description Price SY01 Vinapas, 1 kg. $22.00
  22. I have started recently being able to hunt dinosaur footprints and while I don't want to cover the ones that are naturally visible I may want some of the lower quality or hard to see tracks to stand out. Anyone prepare tracks themselves or know of a good clear coating? I've heard of rustoleum but I am unsure if it's paint or spray I should be using.
  23. How to choose abrasive media?

    Hello! I have recently acquired an air eraser to prep fossils out with, and I was just wondering how to choose an appropriate abrasive for the task. I have a few different items I would like to prep out, but most specifically are some horn corals and hexagonaria from the Devonian Coralville formation.
  24. Hello, Has anyone used a digital microscope (such as Dino-lite) in real time for fossil prep??
  25. Gone' Fishin

    Figured I'd share my current project here. I'm currently testing different sandblasting media and their effect on various matrices since this is a somewhat new application for us at Vaniman. The picture is an almost-finished Green River Fish that's roughly 4" x 2" in size. I will be doing a full-scale article regarding the entire process but wanted to share some of the work with you all for fun. I have a lot more pictures so if you're interested- let me know. It's only letting me upload one (?)
×