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Found 238 results

  1. L.S., Recently I was involved in a study on the growth of native copper porphyroblasts in a sample of mine prop wood from a Bronze Age copper mine on Cyprus. While the paper approaches the subject from a mineralogical/structural geological rather than a paleontological point of view, it might still be of interest to some of you. For a limited period of time, the paper can be downloaded freely via the following link: https://authors.elsevier.com/c/1a0ShhdGqSQ49 The work describes how the formation of copper porphyroblasts in the mine prop wood has locally deformed the tracheid microstructure. This is significant, because the deformation suggests that the native copper formation involved so-called 'displacive growth'. Simply put, the copper crystals must have exerted mechanical force on their environment in order to make room for themselves to grow. This phenomenon is known as the 'force of crystallization' and can be observed under specific laboratory conditions (see e.g. Wolterbeek et al. 2018), but it is generally very difficult to unequivocally prove displacive growth and force of crystallization-driven processes played a role in natural samples. Kind regards, Tim
  2. New to Site, Need help

    I am new to the site and fossils. My son (7) is very interested in fossils. We are planning to go to Glen Rose, Texas this spring. However, He is really wanting to search and find petrified wood in the near future. I do not know where to begin. We live in Tyler, TX and want to go somewhere, we will be able to easily see and find petrified wood and fossils. I am a bad amateur and could really use some help in where to take my son. If anyone knows please help me out
  3. Is this petrified wood

    I found this is there anyway this is petrified wood.
  4. My collection

    This is part of my collection I have acquired over the past year new to TFF just wanted to say hello to everyone. Many of other fossils packed away as I build more cases
  5. Petrified wood or something else?

    Hello, new here. I found this off the side of the highway 95 near the Nevada/Oregon state line. I’m thinking it’s petrified wood, but I don’t know enough to be certain. Your help and opinions would be greatly appreciated! It’s pretty heavy and hard, smooth on 5 sides and rougher on one. A strange thing, could just be environmental, the “rough” side of the rock has a strange smell, kinda of like old cooking oil. photos of “sides” attached. I’ll add photos of top bottom and a few others in comments.
  6. More unidentified MC fossils

    So we have yet another unidentified mazon creek fossil. I see two possible specimens here but I’m not convinced either are proper fossils or even what they could be. The larger one looks like wood to me, and the smaller one looks darker and oddly shaped. I first thought maybe a flat worn?
  7. Fossil ID

    I found this in schuyler county, Missouri about 3 or 4 miles from lancaster a few weeks ago. My grandson would like to take it to school but I felt we needed a bit more information. I am not even positive it IS petrified wood and amber. Whatever it is, I think it's extra pretty!
  8. New acquired Collection

    I have started to collect a few things from a older lady and wanted to share. The large piece of petrified wood is 8” across and 3” thick. The fish I have been wondering if they were the same kind? Love the bug/ mosquito or not sure what to call it. these were found 50+ years ago.
  9. I've collected bucket loads of petrified wood from my family's land in central Texas, but have never found a piece with amber on it. I'm not incredibly keen on sticking a hot needle on it since this is the only specimen I've ever found like this. It doesn't seem to be agate. I can't find many publications on it. Can anyone tell me if this is actually a bit of amber on here or where I can read more about it?
  10. Stumping me beyond belief

    While I am more knowledgeable about fossils than when I joined, this thing is confusing me. It is porous with fine holes and appears to be bone, but it could be wood. Any clues?
  11. Petrified wood in northeastern Ohio

    So I am new to this forum and I'm hoping someone can help me out with this. Also just an FYI I know practically nothing about fossils other than I think they're really cool. I found this rock at my old home in Geauga Gounty Ohio. I was doing some regrading around the foundation of the house when my shovel hit this thing about 2 feet underground. I am certain that it is petrified wood but how it got there is what has me scratching my head. Soil type is a silt loom (mahoning silt loom) the property in the front of the house is classified woodland wetlands. Water table is about 28" below the surface. Not what I would picture when I think of good fossil hunting grounds. So my questions are: - Is it common to find petrified wood in this type of wet clay environment? - Is there any way to determine what type of tree or shrub this may have been from? - If you look close at the picture you may be able to see what I believe are fossilized bug butts that have burrowed holes in this piece of wood. Any thoughts on that? I really wish I could have uploaded more photos but one put me right up to the limit.
  12. I had purchased some petrified wood that was cut into book ends. The blade marks were quite rough. After some effort on my flat lap, to my amazement this half had an image of a man and a dog. I named it Elvis and the Hound Dog. The other half was all black. The piece originated from Sweet Home, OR. I think it is quite the find. I was wondering if others have found pictures in their fossils/rocks. I know picture stone is known for patterns, but images are on another level.
  13. My girlfriend, Valerie and I planned a two week trip to New Mexico and Colorado to visit friends, see scenery, and attend the Peach Festival in Palisades. Of course fossil collecting would be a part of it. I spent a full day with PFOOLEY outside Albuquerque in the Puerco Valley hunting ammonites in the Carlile Member of the Upper Cretaceous Mancos Shale.
  14. Are these wood fossils?

    Hi all, I am at Malaysia right now, at a fossil-bearing site. Are these wood fossils? - Andy
  15. Is this petrified wood?

    Found this sticking out of a creek bed. The smaller piece was directly under the larger one, but it doesn't appear to have broken off. It just has a similar structure. I can't figure out if it's wood, coral, tooth, horn, etc. We have a little of each around here (just north of Austin, TX) but mostly marine fossils. In 5 years I haven't come across one that looked like this though. Closest thing to the interior structure I've found is bison tooth. Any ideas?
  16. Some odd wood imprints from Lasalle County Il.

    I need help identifying these, they are everywhere here in Marseilles but I don’t know what they are
  17. Need help with my petrified wood..

    Okay so now that I have found a group of individuals to help me identify.... I would love to know what find of petrified wood I have collected.. species and mineralization would be helpful. I have stuff that I can't find online. I'll start with the first two that I can't even tell if they are wood or not... All help is incredibly appreciated. Found these two river tumbled pieces south of Green River, Utah. Jurassic I think? Very different from everything else in the field.. Looks agatized? Thank you! Trenton
  18. Finally gave up and had to ask questions. These are from southeastern PA, found in a creek. There's quite a bit of chalcedony mixed with what looks like wood, do we have petrified wood here in PA? Some looks a lot like bark although a few seem to be just sedimentary rock ( not posted ). There's also a lot of conglomerate around here, not incredibly interesting then picked up a piece I've never come across before. It's around 4", the other only just over 1" There's no debris on it, the random pieces in the chalcedony are as solid as the rest. If it isn't wood is it something else with organic origins? Then there's this. Piece of pine cone, along the right bottom edge? What is the long piece at the top? Most conglomerate around here is composed of agate and quartz, these are brand new to me. There are quite a few more like the top images, only one like the third. If these don't qualify as fossils, sorry to have posted them in a fossil forum!
  19. I just inherited a large pink petrified piece of wood anybody know where it might be from sorry I have no info.
  20. Petrified Wood?

    Hello, So, I was looking in my collection, and I found this. Its the first fossil I ever found. Found it in my backyard in Nampa, Idaho. I was looking at it today, and I was beginning to wonder if it really was petrified wood. I mean, it didnt look that much like it. It looks more like a crystal. While I was getting a picture under my magnifier, I discovered that it had lines like wood grains going in one direction. I never noticed them. The thing is you can only see these lines under a magnifier at maximum magnification. They are that faint. I have two questions. First off, is this really petrified wood? Second, if it is, why is it so black? I have never seen petrified wood this color. Any help will be appreciated, Jared
  21. Petrified Wood

    Hello, So, I am doing an interesting experiment involving Petrified Wood. I am taking petrified wood and looking at it under a magnifier. I am also taking non fossilized dead wood and looking at it under a magnifier Basically, I am comparing Petrified wood to living wood. I am doing this to see the similarities and the differences between living plants and plant fossils. I am a gardener, its another hobby of mine, and I am curious about the differences and similarities. I have some interesting data so far. According to my observations, there are not a lot of differences between the Petrified wood and the Living wood as far as the grain direction and the rings go. I used a magnifier setting to look at the grains. It may look weird, but it was the best way for me to get an idea of what the grains and rings looked like. Attached are the pictures. I also noticed that the grains and rings are farther apart in the petrified wood. There may be a reason for that. I am looking into it. I just wanted to share this experiment. If anyone has input about the experiment or additional data, please feel free to post it. If you want color photos, I will get them. Jared
  22. Fossils in rock

    Hello, So, I've mentioned several times a rock that I found at my old house and found fossils in. Today, I can now tell you that I'm finally done looking at and going through the Rock. In total, inside the rock, I found two gastropod shells, seven bones that were most likely from a fish, and a whole lot of petrified wood. It's amazing that all this was inside a small 3 to 5 pound rock! Pictures will be coming shortly. I can't really do it from my phone, and my laptop went missing. I'm trying to find it. As soon as I get the pictures, I will post them. Jared
  23. Petrified Wood?

    This small specimen was said to be a naturally polished petrified wood found in a river at Liaoning, China. I cannot find any tree rings or wood features. The surface does however has some irregular patterns. Do you think this is simply a geological specimen or a fossil? It measures 6x4x3cm.
  24. Jasperized Petrified Wood?

    I have a decent collection of petrified wood I've found here in Utah mainly Triassic Chinle, Jurassic Morrison, and Cretaceous Cedar Mountain Formations. This one has me a little stumped though and I am mainly looking to see if anyone has seen something similar to this. I'm about 80% sure it's jasperized petrified wood. Possibly an old rotting log. This was found near Park City, Utah in Keetley volcanic strata. The locality is not from the ash deposits that produced the nice Silver Creek Junction petrified wood (now extinct under commercial developments) but more likely from the violent lahar deposits that came later. No scraps of petrified wood were found. Just this. More info here. ANCIENT VOLCANOES OF THE CENTRAL WASATCH RANGE
  25. Well, it finally happened ... made the time to stop off this summer at the Rice Museum of Rocks and Minerals in Oregon. Specifically in Hillsboro, Oregon. And wow, WOW .. what a collection !! One that rivals or equals a good number of natural history museums that I have visited. The most impressive was the extensive collection of petrified wood. Some of the slabs could have easily swallowed me. The minerals, as you will see were also quite impressive. Outside there was a seeded rock pile that the kids could dig around in and save their treasures for a minimal fee .. 1.00/lb. The first fist-sized mineral was free. Palm wood from Texas ... Some fantastic corals too ...
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