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  1. #1
    us
    Apr 2007
    Clearfield Pa.
    GPL , 2 box & more
    277
    47 times

    Info needed, found Gray Blue cave clay, in Pa.

    Hi everyone, We been digging 45 feet back inside a cave tracking down a metal object and the clay inside up until now was brown. Now that we are close to the metal object there is a 2 foot streek of gray clay from the top of cave to the floor. When we dig the gray clay we see greenish blue powder or something inside of it. I sent samples out to a lab and no one knows for sure what turned the clay gray. The greenish blue looks like the same color on old copper. We are tracking down gold so I don't know if we have the right spot. Has anyone came across gray clay with greenish blue inside . I can email you a copy of the lab report. Any info will be help full. Thank You
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  2. #2
    us
    Apr 2009
    Allover, KY
    717
    6 times

    Re: Info needed, found Gray Blue cave clay, in Pa.

    Well, I don't have any experience hunting for gold in caves, but I would think that the gray clay that you're running into is just high in reduced metals. In an anaerobic (low oxygen) environment, many metals will be gray or blue. As they encounter oxygen and react, they oxidize (rust) and become brown or yellow.

    This situation is often encountered in soils. The soil near the surface is brown in color due to the reaction of metals (most often iron) with oxygen. As oxygen is mixed into the soil through water infiltration and insect and animal movement, the iron oxidizies or rusts, forming iron oxides, which are brown or red. As you move down through the soil profile, the deeper soils with higher clay content, higher bulk densities, and greater water-holding capacity are low in oxygen, and the metals are in a reduced form, often gray or blue.

    Dry some of that gray clay out and break it into little pieces. Expose it to oxygen and water in a warm environment, and see if it changes to brown, red or yellow.

    Kindest regards,
    Kantuck

  3. #3
    us
    Sep 2006
    Washington and Oregon
    Garret Ace250/Prospecter Bounty hunter(Backup)
    1,402
    1 times

    Re: Info needed, found Gray Blue cave clay, in Pa.

    AS I recall, when the miners where mining gold near Virginia City Nevada, the cussed all the blue clay that made the gold miners absolutely disgusted. They had it piled all over the place to get it out of their way. Turns out it was extremely rich silver ore. Some of the richest ever found. I would suggest an assay.
    ~Nash~
    Whatever it is, it is valuable. If nothing else for the lesson learned or simply the experience of having been there.

  4. #4
    Charter Member
    us
    MINELAB XS-2 Pro ....... XTERRA 305 ....... EXPLORER SE PRO

    Dec 2003
    S.W. Schuylkill County
    45,961
    5163 times
    All Types Of Treasure Hunting

    Re: Info needed, found Gray Blue cave clay, in Pa.

    Copper Pennies Somtimes
    Spread a blue/Green Oxidation into the Ground
    as they turn blue/green.

    Perhaps You are Near a large deposit
    Of Natural or Man Made Copper

  5. #5

    May 2007
    300
    7 times

    Re: Info needed, found Gray Blue cave clay, in Pa.

    FINDER KEEPER!! A WHILE BACK A POSTER FROM AUSTRALIA,, MENTIONED THAT THE SPANISH WHEN BURYING THEIR CACHES,, WOULD FILL THE HOLE WITH DIFFERENT LAYERS OF DIFFERENT COLORED SANDS,, THIS IS JUST A LONG SHOT, BUT KEEP YOUR EYES OPEN FOR SHELLS AND WEIRD SHAPED STONES!! PEACE BRO!! td
    " SYMBOLS RULE THE WORLD, NOT WORDS NOR LAWS " Confucious

  6. #6
    pr
    B.A.

    Apr 2009
    xlt / eagle II sl /surfmaster pi plus / coinmaster
    9

    Re: Info needed, found Gray Blue cave clay, in Pa.

    I find layers of this type of clay in stream beds here on our farm in Puerto Rico,and lots of iron nodules like bog iron.( I at first thought they were meteorites).I also see it in road cuts and there are known deposits of copper near them.I also M.D. on some farm fields in Ct. and find this type of clay in a deep valley also with bog iron around as there are streams and boggy areas around the area.
    B.A.

  7. #7
    us
    Dec 2008
    ARIZONA
    lucky horseshoe
    280

    Re: Info needed, found Gray Blue cave clay, in Pa.

    Hey FinderKeeper


    What is the latest? -- any new pics?


    thank you in advance,

    Cachefinder-
    Never trust a man that says "Trust Me"

  8. #8
    Aur
    Aur is offline
    ca
    Jan 2012
    1
    All Types Of Treasure Hunting

    I need Blue grey clay from gold mine ??

    I urgently need gray blue clay from gold mines. Can anyone help me. I will pay well it least 2-3 kg. I need for medical use. Please. send me a e-mail at m.zaharia@ymail.com
    thank you

  9. #9
    ru
    Jan 2012
    26
    All Types Of Treasure Hunting

    Re: Info needed, found Gray Blue cave clay, in Pa.

    im a newbee and also from pa read alot of stories of silver mines lost in pa i have bad case of gold fever!?#@ good luck

  10. #10
    Charter Member

    May 2007
    853
    3 times
    All Types Of Treasure Hunting

    Re: Info needed, found Gray Blue cave clay, in Pa.

    Look into the mining section in the forums.....theres a huge post about someone owning a nice mine that was rich of blue clay.
    CRH Totals
    90%: 24
    40%: 138
    War Nickels: 3
    Silver Dimes: 15

  11. #11

    Jul 2012
    2
    All Types Of Treasure Hunting

    I have lots of blue gray clay

    Quote Originally Posted by alpha105 View Post
    Look into the mining section in the forums.....theres a huge post about someone owning a nice mine that was rich of blue clay.

    I have lots of blue gray clay is it worth anything? I never dug it out but there is a lot but I'll get my shovel if it has worth lol. wtstandup@gmail.com

  12. #12

    Oct 2012
    18
    3 times
    All Types Of Treasure Hunting
    Seems I read somewhere way back or seen in a treasure post that green-blue clay was somehow related to diamonds in some way.

  13. #13

    Sep 2013
    63
    16 times
    I'm in western pa, lots of different color clay around here. Ranges from dark brown, almost black to pink, gray, green..ect.

  14. #14
    us
    Aug 2012
    New Mexico USA
    Elite 2200
    728
    232 times
    Prospecting
    My Son just built a pit for playing horseshoes. He said in competition games the pit can be either sand or blue clay. Seems there are uses for the stuff.
    Chop wood..Carry water

  15. #15
    us
    Frank

    Jun 2013
    Jefferson City, Tennessee
    JW Fisher Pulse 8X; Minelab CTX 3030 & Sovereign Elite; White's GM II, Beach Hunter Id, Surf PI, Coinmaster Classic II, 6000 Di S2, Two 2000-D S3's, old GM 66-T with 5 coils & GM 65-T with 3 coils
    2,097
    921 times
    Prospecting
    Gray blue clay is often associated with Silver and normally obtains the color due to oxidation of the Silver. This same gray blue clay often contains Gold. The greenish blue in the clay is probably due to Copper oxidation otherwise known as Copper Oxide. You might want to pan the clay out to see if there is any Gold any it, making sure to recoup the clay. After recouping the clay, spread it out in layers on plastic and let it dry. After dried, place the clay in a large iron or other large kettle, mix pure Borax with it, then burn it with a torch. If there is any Silver in the clay, it will bead up and can be panned out. Although I am not sure of this, the process may also cause any Copper to bead up and come to light. This method was told to me by a friend that has Gold prospected most of his life and who also has found some very nice deposits of Silver.


    Frank

    Ooops, I did not realize that this Thread was 3 years old until after I had already posted! I wonder what the O.P. found out about the clay?
    Last edited by huntsman53; Dec 10, 2013 at 09:41 AM.

 

 

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