Two strange metal detecting finds
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  1. #1
    us
    I Often Find Myself Killing Time Looking For What Time Has Killed!

    Feb 2009
    Morehead City / Newport NC
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    Two strange metal detecting finds

    I found a black chunk of material that sets the metal detector off and is extremely light weight. Muritic acid doesn't affect it at all. It is pitted. I have no idea what this could be. Also, I found a grayish color metal that has a very heavy weight property and is harder than lead. Muritic acid doesn't affect this metal either. Any ideas or suggestions.
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    Them Colonials​Can't Hide Nowhere Now!

  2. #2
    us
    Sep 2006
    Montana
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    Re: Two strange metal detecting finds

    It looks like some kind of graphite... I dunno.

  3. #3
    us
    Aug 2008
    Virginia
    GARRETT GTAx 550
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    Re: Two strange metal detecting finds

    The top rock looks like a hot rock that we find around railroad tracks,but that is my guess.

    fortbball9

  4. #4
    us
    I Often Find Myself Killing Time Looking For What Time Has Killed!

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    Morehead City / Newport NC
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    Re: Two strange metal detecting finds

    I appreciate your reply! And I can see where on this picture it looks like graphite, but I have a piece of graphite out of a battery cell and the large chunk item I found with the metal detector is extremely hard and brittle. Also, it will not mark paper. I'm not convinced that it is graphite. Any other ideas?
    Them Colonials​Can't Hide Nowhere Now!

  5. #5
    us
    I Often Find Myself Killing Time Looking For What Time Has Killed!

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    Re: Two strange metal detecting finds

    Quote Originally Posted by fortbball9
    The top rock looks like a hot rock that we find around railroad tracks,but that is my guess.

    fortbball9
    It was found on the river bank around an old landing close to where an old homesite from the late 1700's to early 1800's. As far as I know, there were no railroad tracks anywhere near by. I know that doesn't mean that it couldn't be that and I haven't thought of that. Thanks!
    Them Colonials​Can't Hide Nowhere Now!

  6. #6
    us
    Jul 2007
    Hollywood, Florida
    438
    5 times

    Re: Two strange metal detecting finds

    The top piece looks like pumice, but I can't think of any reason for it to set off a metal detector. Are there volcanoes nearby?

    Chip V.

  7. #7
    us
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    South Florida
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    Re: Two strange metal detecting finds

    Quote Originally Posted by chipveres
    The top piece looks like pumice, but I can't think of any reason for it to set off a metal detector. Are there volcanoes nearby?

    Chip V.
    Maybe something inside? Just a guess.

  8. #8
    us
    Jan 2008
    PNW
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    Re: Two strange metal detecting finds

    looks like a clinker from coal ashes. from coal fired: steam boat, furnace, smelter,
    blacksmith, train, ect.

  9. #9
    us
    monty

    Jan 2005
    Sand Springs, OK
    ACE 250, Garrett
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    Re: Two strange metal detecting finds

    Looks a lot like slag from the local smelter. They use it to build up roadbeds and etc. around here. Monty
    Don't make me loose the hounds! If you dig, Cover up your holes.

  10. #10

    Nov 2007
    29

    Re: Two strange metal detecting finds

    Not sure about the bottom pics but the top lightweight pic is burnt coal (coke) or also known as a hot rock.
    A "hot rock" is a stone or burned coal (coke) which contains
    a high concentration of iron ore. A hot rock will usually give
    a good, solid signal in the motion (GEG/DISC) mode of operation.
    Found some of this myself.

  11. #11
    us
    Jan 2009
    El Paso Texas
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    Re: Two strange metal detecting finds

    meteorite maybe?

  12. #12
    nz
    AKiwi

    Aug 2005
    Hastings, NZ
    Garrett GTA 500
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    Re: Two strange metal detecting finds

    Alabamajoe.... has got the top pic.
    We burnt this stuff in old coal fires or stoves.
    It is the result of coal having being heated to give off its gas for other means.
    Cheers
    The Road to Hell is paved with Good Intentions

  13. #13
    us
    Jan 2008
    PNW
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    Finding lost stuff and losing found stuff

    Re: Two strange metal detecting finds

    Quote Originally Posted by dozer dan
    looks like a clinker from coal ashes. from coal fired: steam boat, furnace, smelter,
    blacksmith, train, ect.

    a.k.a. clinker.

  14. #14
    us
    youtube.com/c/BigCypressSwamp

    Dec 2004
    South Florida
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    Re: Two strange metal detecting finds

    I didnt know that coal could set off a metal detector.

  15. #15
    us
    Dec 2008
    Michigan
    Fisher 1266
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    Re: Two strange metal detecting finds

    B.C. Hunter. I have found alot of unburnt coal metal detecting and it's usually a good signal. I don't understand why but it's a real pain in the rump. It don't happen very much with my 1266 unless it's a big chunk, but with my Garrett 500 it was pretty common. Anybody else have this problem?

    Wolverine.
    Endeavor To Persevere.

 

 
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