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Thread: Can someone please help me identify this stone ?

  1. #1 Can someone please help me identify this stone ? 
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    I found it in my yard, next to the root of a tree that had been cut down. I live in northeast TN. It is not magnetic, the straight edge on it, and the fine grooves on the surface really confuse me. It is apx. 1" long by 3/4" wide by 1/2" thick. It is whiteish mostly, with what appears to be a small part of limestone in it. It also has a dark part that looks like it was poured on to the stone. All help is greatly appreciated. Larry

    000_0022.jpg000_0023.jpg000_0024.jpg000_0017.jpg


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    Time Lord Paleoichneum's Avatar
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    hard to tell but the last two show it may in part be chert/chalcedony


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  4. #3  
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    Bivalve?

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  5. #4  
    Time Lord Paleoichneum's Avatar
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    The striae on the front side are not right for a bivalve or brachiopod
    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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    WYSIWYG Moderator marnixR's Avatar
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    the last 2 look a bit like the internal mould of bivalve
    "Reality is that which, when you stop believing in it, doesn't go away." (Philip K. Dick)
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  7. #6  
    Time Lord Paleoichneum's Avatar
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    hmmmm, they reaelly look like conchoidal frcature faces in massive chalcedony to me :-/
    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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    WYSIWYG Moderator marnixR's Avatar
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    yeah, at a second glance i'd say you're right
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  9. #8  
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    Thanks to everyone who has helped ! But as a totally ignorant person when it comes to this subject. I have a couple of questions if I might be allowed to ask. First, Does the staight raised edging that appears to devide the top from the bottom of what appears to have at one time been a round stone, have any meaning ? Also, can someone please put this in laymans terms: "conchoidal frcature faces in massive chalcedony" ? And finally, should this stone just be tossed back to the earth, or is there something or someone who would want it for whatever purpose ? Thanks again. Larry
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  10. #9  
    WYSIWYG Moderator marnixR's Avatar
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    see wikipedia - conchoidal fractures are so named because they resemble the shape of a shell (conch in greek), and they usually occur in fine-grained rocks with no preferential cleavage plane
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  11. #10  
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    I think it looks like a fragment of some human used stone item perhaps a grinding stone. If it were a fragment of a stone mill stone that would account for the rasied arc and possibly the "staining".
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  12. #11  
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    Heh, now you have me curious, very interesting and I think it looks really familiar.--I have a geologistbuddy I'll shift the picture over to and return with thoughts?.. Incidentally, I occasionally look back to this identifying text myself, fully illustrated with great helpful photos, qualifies the above terminology, like "striations," etc, for the layman. There are many helpful texts like this, naturally, but I found this one easier reading, and a quicker indentifying tool than most by far, since, as Donna says in this review, she's taken the photos 'in the rough,' as you find them; Rocks in the Wild, A Review.
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