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  1. Here is a video of an Ethiopian crystal opal with what I think is root systems inside. Are the inclusions really organic or they might be crystals? I added two microscopic images in the end of the video.
  2. This is a boulder opal with some kind of crystals in it. It was sold as “vegetation fossil”. I am attaching a few images that were taken under a microscope. The dimension of the opal is 15.4 x 9 x 4.9mm And the crystals, or whatever it is, take around 1/3 of the length. So, is this a fossil and a fossil of what or these are some minerals? Thanks.
  3. Vopros

    Opal bone?

    Looks like an opal bone. what do you think?
  4. Vopros

    Wood or bone

    This is an opal from Lightning Ridge. One image is of a complete stone and a few others are microscopic images. what do you think it is?
  5. Vopros

    Opalised bone?

    This is a boulder opal from Australia. it is 12 x 8.4 x 3.2mm could it be a bone?
  6. Vopros

    Bone or wood?

    What do you think?
  7. Vopros

    Could it be a jawbone?

    This is opal from Australia
  8. Vopros

    Opal lungfish tooth plate

    The seller did not realize what it was and split it in 4 pieces. What a pity! Here it is
  9. Vopros

    Opal lungfish tooth plate

    A few days ago I posted on this forum the same fossil but back then I thought it was a bone. Now I know it is a lungfish tooth plate. It was broken into four pieces by a miner. Here are two images of the front and back of the specimen ( hat I tried to reassemble) and two more show how it looks under a microscope. A paleontologist told me it is incomplete. However, except the broken sides I do not see any other edges that appear to be broken. It appears to be a complete specimen. What do you think? If it is incomplete on what sides you believe the parts are mis
  10. High-tech tools reveal opalized fossil skeleton by Flinders University, August 29, 202 Absolute gem of a find: Opalised dinosaur fossil studied using innovative 3D printing technology. The rare fossils may represent a new Australian dinosaur species Cosmos Magazine, August 29, 2022 Dinosaur Bones Shimmering With Opal Reveal a New Species in Australia A discovery in an Australian opal mine remained unexamined for three decades—it turned out to be the most complete opalized dinosaur skeleton in the world, Gemma Conroy, Smithsonian,June 3,
  11. ChrisSarahRox

    Possible bone?

    This one is from Pedy and it's on the top shelf. I was once told of the possibility that it could be a fossil, would be awesome but I would still be ok with this being " just a rock."
  12. I love the useful information on the fossil forum. For something different I have posted some pictures of where I "mine" fossils from 20m underground in an old opal mine. I am extending an old mine tunnel to find occaisional opalised fossils. The first picture below shows my current tunnel and the second picture the "rock" layer that contains traces of opal and opalised fossils. The rock is quite weathered and can be dug out with an electric jack pick. The majority of fossils that I find do not have gem opal colour play, but they do have exceptional presevation.
  13. Aussieopal

    Opalised bone?

    Hi all the imaginative one back again This time I am curious as to wether this could be a fossil replacement opal? The photos are not very good because it is quiet small, possibly about the size of a pea. The play of colour in this little thing is absolutely amazing! Every single colour on the spectrum from common blues and greens to beautiful orange, red and yellow. It was found in lightning ridge Australia in a $5 lucky dip bag my kids got. To me it looks like a piece of spine or tail bone but once again i love to imagine!
  14. This came in a parcel of opal from Lightning Ridge. I have cut the bottom and a little of the side to be able to see inside better. The smaller opalized top portion is 8x10mm, the bottom opalized portion is 12x10mm. I have been told this may be a yabby button, however I’m not sure because all the photos I’ve seen of yabby buttons don’t look a whole lot like this. I appreciate any feedback, and feel free to ask any questions:) thanks!
  15. Hey everybody. Ive ran into some opalized belemnites that I bought about 25 years ago. I don't know what kind of lighting is best to show the colors of them? I did a google search and got everything under the sun except for what I was looking for. Any help/ideas would be greatly appreciated. Thanks so much RB
  16. Vopros

    Minerals or fossils

    Hello, Here are a few microscopic images of Yowah opal. I wonder if this spider-looking thing is a fossil or a mineral, and also what do you think about other things in this opal
  17. This is from an email exchange between Dr. Elizabeth T. Smith (of Lightning Ridge and author of the singular "Black Opal Fossils of Lightning Ridge") and I, last month. [Liz also co-authored "Ornithopod diversity in the Griman Creek Formation (Cenomanian), New South Wales, Australia" which was first published in Peer J magazine and which established the new species of herbivore, Weewarasaurus pobeni.] "To explain, it's 0345 and I have insomnia intensified by my excitement about an opalised Lungfish plate I bought today from a top bloke mining at Emu Field (Coocoran), and a little
  18. Woogie

    Tiny opal fossil

    Hello hello, recently i bought some opal, in amongst the small stones was this. I am wondering if this is a fragment of bone? Maybe a piece of jaw bone? Its from Coober Pedy, which i believe is cretaceous and marine
  19. Bugabob

    Opal filled bone (?)

    Here’s a different kind of possible opal fossil from Australia. This was found in Winton, not lightning ridge. See the next post for the story behind it. I hope the opal fossil collectors and experts on here will weigh in with their opinions.
  20. Australian Paleontology

    Help with Ammonite fossil from Madagascar!

    Hello, I really need some help identifying what formation my Ammonite fossil is from. Its been dated to the Albian epoch and is from the Mahajanga province, Madagascar. Unfortunately nothing about it says what formation it could be from. I've done a bit of research and the closest formation to what I'm trying to find is the Ankarafantsika Formation. The problem is that, that formation is dated to the Cenomanian. Any help would be great! Here's a picture
  21. Folks on mindat.com suggested asking this question here! This is less of a "what is this a fossil of" question and more of a "is this possible" question. I have a small chip of translucent chalcedony showing a mass of white inclusions, two of which look very much like a grass seed-head. The gist of the conversation so far has been 'is it possible for fossil material to be an inclusion within a silica mineral like agate or chalcedony?' As opposed to an agate-replacement or opal-replacement fossil like an agate limb cast, agatized wood or agatized/jasperized opaque mudstone with intact fos
  22. goldsmacker

    Opalised Dino Tooth? Pic Heavy

    Hello everyone I have recently obtained an opal parcel of rough to cut into gems from the opal fields at lightning ridge Australia, however right before I was about to grind this one rough opal something stood out. I remembered walking in the natural history museum in Sidney Australia and noticed the opalized teeth of varies animals/dinos etc. This one was just like one I had seen many years ago. I cleaned it only; no polish just water and a soft paintbrush as not to alter it. From my research, I found a possible match a Hypsilophodon it lived in the area where lightning ridge opals are fo
  23. Hello. I have opalized wood for trading. Age - Paleogene. There are Teredo mollusc passages ranging in size from 6 to 10 mm, filled with cemented opal sand, less often with chalcedony. Insect coprolites are also found. There is a sample of a solid section with annual rings (ground, but not polished). If you are interested in such samples, please do not hesitate and contact us in a personal. Have a nice day.
  24. Terry H

    Nevada tree trunk/plant?

    Trying to find out what this is. Found in the Northern Nevada desert. It looks like a round tree trunk 10 inches across. Half of the outer surface is somewhat smooth and the other half has a stepped pattern that reminds me of how some plants grow stems upwards. The pic that shows this section maybe upside down. The photographer and I aren't sure whats up or down. The texture is like glass, we think its opalized? Very sharp edges and smooth. It's brittle. The color is brown on outside with white calcium patches. Inner area is a solid carmel color with tint of green, there are no flashes of rain
  25. Australian Paleontology

    Partial Opalised Dinosaur Jaw Frag???

    So i happen to come across this image, and it claims to be an opalised dinosaur jaw fragment from SA (South Australia) for me at least i do see some kind of fossil but its identification as carinal is dubious in my opion. What do yall think?
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