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Thread: Ozark Stone

  1. #1 Ozark Stone 
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    Hello,

    I was wondering what type of stone this is in the attached picture. Here is a brief description: it is about 8.5 inches across, smooth and found in the Ozark region of Missouri/Arkansas.
    It weighs approximately 10 pounds. Any help would be appreciated.
    Stone.jpg
    Thank you.


    Last edited by MarlaH; October 18th, 2011 at 09:23 PM.
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  3. #2  
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    Was it found indoors or out of doors?


    "Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense." --Buddha (563BC-483BC)
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  4. #3  
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    Outdoors in a wooded area.
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  5. #4  
    Forum Radioactive Isotope Paleoichneum's Avatar
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    what does the underside look like? have you done any basic tests on it such as hardness and acid tests?
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

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  6. #5  
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    The underside looks like the top in the photo. No, I haven't done any tests.
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    Forum Radioactive Isotope Paleoichneum's Avatar
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    Try giving us a general idea of the hardness, at the moment there are a great number of possible brown rocks that it could be.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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  8. #7  
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    Last edited by Geo; October 26th, 2011 at 07:12 PM.
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  9. #8  
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    I still think its odd looking, and the shape is off, I would love to have more information on it before making a suggestion.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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  10. #9  
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    OK. I will do the hardness test and post more information.
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  11. #10  
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    Quote Originally Posted by MarlaH View Post
    OK. I will do the hardness test and post more information.
    I thought he said it was as hard as a rock.
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  12. #11  
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    Rocks can range in hardness from that of talc (scratch with a fingernail) to diamond depending on there composition.
    If more of us valued food and cheer and song above hoarded gold, it would be a merrier world. -Thorin Oakenshield

    The needs of the many outweigh the need of the few - Spock of Vulcan & Sentinel Prime of Cybertron ---proof that "the needs" are in the eye of the beholder.
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  13. #12  
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    I ordered a basic Moh's Hardness Scale of Minerals test kit and used a penny and nail to scratch the surface. The penny did scratch, so I guess it is a Calcite. Apple cider vinegar dropped onto the surface had no effect.
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  14. #13  
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    did you apply the vinegar to a freshly broken surface ? if not, the patina may prevent reaction to such a dilute acid
    "Reality is that which, when you stop believing in it, doesn't go away." (Philip K. Dick)
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  15. #14  
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    chert nodule (maybe)
    Don't bother visiting my Earth Sciences forum, it died a death due to lack of love
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