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Thread: Fossil?

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  1. #1
    us
    Jess

    Jul 2017
    SD and GA
    26
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    All Types Of Treasure Hunting

    Fossil?

    What is this? Found in Eastern SD near the James river. Found among Native American artifacts. Fossil? Agate?
    Click image for larger version. 

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ID:	1482641
    Click image for larger version. 

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Size:	1.40 MB 
ID:	1482642

  2. #2
    us
    Jess

    Jul 2017
    SD and GA
    26
    13 times
    All Types Of Treasure Hunting
    Chert? *

  3. #3
    us
    Dennis

    Jan 2012
    Montana
    White's MXT
    5,854
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    All Types Of Treasure Hunting
    Banner Finds (1)
    It does not look like a fossil.

  4. #4
    us
    Jun 2017
    A2 Michigan
    Ace 250, Bounty Hunter Headphones, Sun Joe Hori Hori, CMS magnetics, the rest is just mil surplus.
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    All Types Of Treasure Hunting
    Looks like an inclusion
    Jessmc likes this.
    Dum spiro spero

  5. #5
    us
    Jess

    Jul 2017
    SD and GA
    26
    13 times
    All Types Of Treasure Hunting
    Perhaps but that doesn't explain the whitish clear color in between the dark lines. Where the straw shape abruptly ends in the middle of the stone has no indent or anything like the indent close to my thumb in the first pic. I apologize for the pore pics. I appreciate your input.
    TheCannonballGuy likes this.

  6. #6
    us
    Oct 2011
    4,216
    2408 times
    Beach and Shallow Water Hunting
    just a very nice rock, the center rectangle does not abruptly end, if you really look at it you can see that the tan/yellow silica material sort of rolls under the grey material. these sorts of inclusions are made as minerals separate and sort each other out during the process of. it is stream or water polished and a fun item.

  7. #7
    Educator

    Feb 2006
    Occupied CSA (Richmond VA)
    White's 6000, Nautilus DMC-1, Minelab
    4,856
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    Relic Hunting
    Although I do not know the proper Mineralogical term for it, I think it is what I can only call an "agatized fossil." I found some agate/chert stones which are similar to it, in a rocky creek at Paint Rock Valley, Alabama. (The name comes from the colorful agate/jasper/flint specimens frequently exposed in creeks there.) The shape of the rounded side of your stone greatly resembles what I found there. Note that the rounded side looks like a chuck of oily bread-dough. It has defiitely been stream-or-river-tumbled. The small chips here-&-there on it seem to show "conchoidal fracture" patterns, indicating a silicate/chert composition. Chert/flint nodules sometimes form around a fossil.

    Conchoidal fracture:
    https://en.wikipedia.org/wiki/Conchoidal_fracture
    Old Pueblo likes this.
    "Let The Christ be a light to you in dark places, when all other lights go out."

 

 

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