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Found 14 results

  1. What are these five rocks, please? (Let's number them 1 - 5, from left to right.) They're from a geoscience professor's collection, and were given to me without ANY other information, so I can't provide any geographic or stratigraphic information whatsoever. Number 1 = basalt? Number 2 = agate? jadeite? something else? Number 3 = ? Number 4 is very smooth and milky-like. Mudstone of some sort? Number 5 = calcite? Thank you for any help!
  2. Andrew85

    interesting find

    Hello I found this many years ago in Eastern Ontario Canada. I had two at one time but one disappeared. Any ideas what it is? I haven't seen anything that looks similar. Thank You
  3. I am going to split this open and take pictures of what is found. This is from a fossil bed in Clarkia, ID. These are roughly 15 million years old. This area is has a very different climate than what these fossil plants can survive in. You can also find garnets in this area too, but not in the fossil beds. My husband worked hard on getting this out for me to work on, but since the sun was going down quickly I didn't have enough time to complete the splitting there.
  4. Scientists announce a breakthrough in determining life's origin on Earth—and maybe Mars Foundation for Applied Molecular Evolution, June 3, 2022 The open access paper is: Craig A. Jerome, Hyo-Joong Kim, Stephen J. Mojzsis, Steven A. Benner, and Elisa Biondi. Catalytic Synthesis of Polyribonucleic Acid on Prebiotic Rock Glasses Astrobiology. ahead of print http://doi.org/10.1089/ast.2022.0027 Yours, Paul H.
  5. From the album: Fossil Amber and Copal: Worldwide Localities

    Ethiopian Amber Wenchit River Valley North Shewa Zone, Amhara Region, Ethiopia “Tertiary Sediments” (23-16 Ma) Lighting: 140lm LED Longwave UV (365nm) Specimens: Spec. A (Marcasite): 11.2g / 27x20x31mm (in image) Spec. B (Large Yellow): 8.0g / 41x30x20mm Spec. C (Flow Lines): 8.4g / 34x31x20mm Spec. D (Run [Large Half]): 5.3g / 24x21x17mm Spec. E (Run [Small Half]): 2.8g / 23x19x14mm Spec. F (Green Flow): 5.7g / 26x25x20mm Spec. G (Green Angular): 3.1g / 27x20x15mm Spec. H (Umber [Large Half]): 3.3g / 26x18x17mm Spec. I (Umber [Small Half]): 2.2g / 22x12x12mm *With the exception of Specimens D and E, all present slight matrix on the exterior, consisting primarily of siltstone. Specimen A has a large cluster of iron sulfide mineral concretions on its rear side, accounting for the majority of the piece's weight. Mining, Properties: While there are several other amber and copal deposits on the African continent, Ethiopian amber deposits discovered back in 2010 have proven to be the most productive: on average, at least 20kg is mined by the locals every year. The amber is hard, and ranges in color from dark brown, red, and yellow, as well as varying shades of green; the green coloration is a natural base color, although a green fluorescence can be seen in some Ethiopian material when exposed to high-intensity LED light or sunlight: similar green fluorescent response is seen in some Dominican, Mexican, and Myanmar ambers. The green base coloration seen in some Ethiopian amber was likely caused by significant pressure and heat: volcanic layers of basalt of varying thickness overlie and underlie the deposits, and acted as a natural autoclave. The size of recovered amber specimens ranges anywhere from 5-25cm in size. Geology and Age of Deposits: Amber is found in sandstone and siltstone layers along the valley walls of the Wenchit, Jemma, and Mugher rivers; the amber-bearing layers were originally attributed to the Debre Libanos Sandstone, a Cretaceous geological Formation within the Blue Nile Basin 200-500m thick: this assignment was based on local observations, a geological map, and fossil spore identification. However, due to incorrectly-dated and some then-unidentified fossil spores, as well as arthropod and plant inclusions from genera with living relatives, the amber is believed to be Early Miocene in age. The amber occurs not in the Debre Libanos Sandstone, but in Tertiary sediments comprised of siltstone and sandstone situated between basalt layers, which often display columnar jointing. These basalt flows vary in age from Early Oligocene (~30 Ma) to Quaternary (2.58 Ma to Recent). Inclusions, Botanical Source: Ethiopian amber is frequently rich in inclusions, especially bacteria and fungal spores; plant inclusions include liverworts, various angiosperms, and rare examples of mosses and lichens; arthropods are abundant, including mites, spiders, and over 13 families of hexapods (e.g., beetles, flies, ants, etc.). Comparing the spectrographic results of Ethiopian amber with Dominican and Mexican ambers, has shown that this is a Class Ic resin, most likely produced by a member of the Fabaceae family; fossil leaves and flower parts of trees belonging to the Hymenaea genus have been found in this amber, adding weight to the chemical analysis’ findings. Sources: “A review of copal and amber occurrences in Africa and their paleontological significance.”; Bulletin de la Société géologique de France, 2020, 191 (1), p. 17; Valentine Bouju, Vincent Perrichot “On the ages of flood basalt events Sur l’âge des trapps basaltiques”; Comptes Rendus Geoscience, Volume 335, Issue 1, pp. 113-140; Courtillot, Renne 2003 “Stratigraphic and structural evolution of the Blue Nile Basin, Northwestern Ethiopian Plateau”; Geological Journal Issue 44, pp. 44, 47-50; N. Gani, et. al. 2008

    © Kaegen Lau

  6. Oxytropidoceras

    The recycling of oceanic crust

    Geochemists solve mystery of Earth's vanishing crust by Florida State University, PhysOrg, June 26, 2020 https://phys.org/news/2020-06-geochemists-mystery-earth-crust.html The paper is: Yang, S., Humayun, M., and Salters, V. J. M., 2020, Elemental constraints on the amount of recycled crust in the generation of mid-oceanic ridge basalts (MORBs). Science Advances. Vol. 6, no. 26, eaba2923 https://advances.sciencemag.org/content/6/26/eaba2923 Yours, Paul H.
  7. I’m so sorry to bother anyone but Google Image search has sent me down days of rabbit holes. This rock is slightly magnetic (the magnet acts funny but it doesn’t stick). When rubbed against paper it rips it or imprints it but doesn’t leave residue at all (Even when wet) . Google keeps showing me meteorites but I’m not the type that thinks everything I have is a Native American tool or valuable crystal. All I did to clean it was spay it with a water bottle. With all the rain lots of stuff has came up to the top and this was found in that same grid square of 1foot x 1foot as the other weird things like sharpened points and in the foot sized square beside it was a couple of almost finished arrowheads. I live on the border of Lauderdale and Limestone counties in North Alabama. Please help or in a thousand years someone might find my laptop and phone with google stinks scratched into the screen.
  8. Venus May Not Have Been As Earthlike As Scientists Thought By Elizabeth Howell, SpaceCom, October 14, 2109 https://www.space.com/venus-not-so-earthlike-after-all.html The papers are: Wroblewski, F.W., Treiman, A.H., Bhiravarasu, S.S. and Gregg, T.K.P., 2019, March. Ovda Fluctus, the Festoon Lava Flow on Ovda Regio, Venus: Most Likely Basalt. In Lunar and Planetary Science Conference (Vol. 50). https://www.hou.usra.edu/meetings/lpsc2019/pdf/1699.pdf Wroblewski, F.B., Treiman, A.H., Bhiravarasu, S. and Gregg, T.K., 2019. Ovda Fluctus, the Festoon Lava Flow on Ovda Regio, Venus: Not Silica‐Rich. Journal of Geophysical Research: Planets, 124(8), pp.2233-2245. https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019JE006039 Yours, Paul H.
  9. drkeithol

    Possible fossilized bone found

    We were looking for Herkimer diamonds on Mount Tzouhalem on Vancouver Island, BC, Canada today. The area we were in had been blasted to make a golf course which never happened, about 10 years ago. It exposed basalt reportedly from the Devonian period, and there's lots of shale with some veins of clay that the Herkimer diamonds are found in. We found this possible fossil just laying amongst the loose shale. It seems to have some characteristics of bone, and is a fair size chunk. Here's the pictures. Any help would be appreciated.
  10. twosonn

    Animal Fossil Femoral Head?

    We found this fossil in our driveway after a delivery of gravel. The delivery was from a rock crushing pit outside of Troy Idaho in layered volcanic ash and basalt. There are some petrified trees in the area of the pit .
  11. noct.strix

    Mystery Arthropod?

    Found on a beach in Scotland. Matrix appears to be volcanic. Any clues?
  12. tgtbt

    a real igneous fossil?

    Greetings Fossil Forum We are here because frankly we really do not know where else to start! Some 50 years ago, while on a semi tropical island... -a somewhat recent (surprisingly thin) lava flow that went across some very shallow water, ran over a large shell. -The lava vaporized the upper part creating an bubble that later broke open to reveal what you see in the photo: -the lower part being preserved somehow with parts of the original shell converted to Basalt, -the rest virgin with sand and small local shells still attached., no Lie! -We are lifelong collectors and have never even heard of something like this. -Here is a photo to get started; we have much more info. We will start a FaceBook and Youtube bit if needed. But would rather goto the collectors on your site to start as we need some advise and wisdom about such a find. Please contact through this forum Thank You tgtbt
  13. jksmithvegas

    Weathered Lava/basalt Fossil - Scallop

    It appears to me that lava flowed over a scallop bed followed by weathering in the surf - i think some mineralization has occured but I cant be positive. Seems a bit rare to me but I don't know anything about it. Any information would be helpful. Could it have come from Hawaii?
  14. epaulwal

    Need Help Identifying Rock

    I need help identifying this rock. It was found as shown in a delivery of limestone gravel used to form the base of a concrete paver sidewalk. The project was located on Neville Island, PA but the limestone gravel was delivered from a landscape supply yard. I have no idea where they purchased their limestone. Thanks for your help. I am just curious and want to maybe make a paperweight/pencil holder for my desk. It is quite heavy and non-magnetic.
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