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  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

Found 9 results

  1. Amber vein in Pseudomorph after pet. wood?

    I inherited this specimen among others when my grandmother passed away. I believe it is agate chalcedony pseudomorph after wood because there is what appears to be a vein of Amber in and spilling down the exterior. I have all kinds of photos, but am having issues uploading most due to size.
  2. I saw an interesting modern “fossil”, a copper pseudomorph after a scorpion owned Flagg Mineral Foundation member, Bill Yedowitz. It will be featured in an upcoming special edition of Rock and Gem Magazine. Native copper and copper minerals sometimes replace and coat organic matter left in mines. I have seen pictures of copper replacing mining timbers and wood tool handles. I have heard that a crushed prehistoric Native America was found in an ancient mine in the SW US. Because the bones were replaced with malachite, it was named the Malachite Man and reburied. Another version of the story might be found here: https://en.m.wikipedia.org/wiki/Moab_Man Although too young to be a fossil yet, older fossils might be found that answer an earlier TFF post about whether or not native copper could be a fossil. @Herb @Auspex
  3. BOTRYOIDAL CHALCEDONY QUESTION

    I have some, what I believe to be, calcareous tufa. I will be posting photos of different specimens over multiple posts and days. All specimens are in partially composed of botryoidal chalcedony. My main question has to with the fact that botryoidal chalcedony is a known pseudomorph in marine fossils. Many of my specimens look like they could be stromatolite-ish or algae-like. Does anyone have knowledge or experience with botryoidal chalcedony and its association with fossils? Can stromatolites or algae sediments become pseudomorphed into botryoidal chalcedony? The calcareous tufa rock that I will post in this message is definitely fossiliferous. You can plainly see three small marine fossils on the bottom-side of the fossil (What might they be?). Two are casts and one is a mold. Generally this rock is "bowl-shaped" overall with a convex top and a concave underside. The rock's top surface is covered with botryoidal chalcedony. There is a smaller amount of botryoidal chalcedony on the underside. Could the botryoidal chalcedony be a psuedomorph fossil? The first photo (#1) shows the rock's upper-side; The second photo (#1B) shows the underside; The third and fourth photos (#1C & 1C-2) are the same fossil object (cast, about 0.5 mm): The fifth and sixth photos (#1D-1 & 1D-2) are the same fossil object (cast, about 1 mm): The seventh and eighth photos (#1E-1 & 1E-2) are the same fossil (mold, about 1.5mm):
  4. Greetings. I have a lot of photos I’d like to share and get some feedback on, assuming there is not a unanimous agreement that the specimens you see in this photo are purely Geological in origin... I found them, and many more, within the geographical boundaries of a Jurassic age rock formation in Northern California that is listed primarily as meta volcanic rocks. Considering that information, please tell me if you thinking I’m barking up an imaginary tree here... If you are uncertain, let me know, and I will post more pictures... Thanks for your time! -Quinn
  5. Tylostoma ovatum (Sharpe, 1849)

    From the album Cenomanian-Turonian Gastropods and Bivalves.

    Tylostoma ovatum (Sharpe, 1849), Calcários Apinhoados da Costa D'Arnes formation, Upper Cenomanian-Lower Turonian, Portugal. Pseudomorph of goethite after pyrite resulting from oxidation of the ferrous sulfide to ferric oxyhydroxide 60 mm
  6. Tylostoma ovatum (Sharpe, 1849)

    From the album Cenomanian-Turonian Gastropods and Bivalves.

    Tylostoma ovatum (Sharpe, 1849), Calcários Apinhoados da Costa D'Arnes formation, Upper Cenomanian-Lower Turonian, Portugal. Pseudomorph of goethite after pyrite resulting from oxidation of the ferrous sulfide to ferric oxyhydroxide 60 mm
  7. Tylostoma ovatum (Sharpe, 1849)

    From the album Cenomanian-Turonian Gastropods and Bivalves.

    Tylostoma ovatum (Sharpe, 1849), Calcários Apinhoados da Costa D'Arnes formation, Upper Cenomanian-Lower Turonian, Portugal. Pseudomorph of goethite after pyrite resulting from oxidation of the ferrous sulfide to ferric oxyhydroxide 60 mm
  8. Tylostoma ovatum (Sharpe, 1849)

    From the album Cenomanian-Turonian Gastropods and Bivalves.

    Tylostoma ovatum (Sharpe, 1849), Calcários Apinhoados da Costa D'Arnes formation, Upper Cenomanian-Lower Turonian, Portugal. Pseudomorph of goethite after pyrite resulting from oxidation of the ferrous sulfide to ferric oxyhydroxide 60 mm
  9. It Was Labeled "hematite After Wood"

    Last month, my husband found this piece labeled "Hematite After Wood Minnesota" at a rock shop. The piece is about 7 cm long by 2 cm wide between the bulges. I have some doubts about the "After Wood" part of this label. The bulges look more botryoidal than barklike, and I don't see any distinctive woodlike structure on the broken ends. I could easily be wrong, though. Here are some better-illuminated pictures: Do I have a really cool mineral replacement fossil here, or a really wild-looking pseudofossil? If the former, I'll include it in my mineral club open house display this Sunday. If the latter, I might include it in a mineral club display on pseudofossils next year!
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