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Thread: Large Black gold nugget found -- do I clean it?

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  1. #1
    us
    Jun 2017
    Virginia
    Nokta AU Goldfinder
    71
    169 times
    Prospecting

    Large Black gold nugget found -- do I clean it?

    Hello everyone! First post here but long time reader

    I recently found the biggest gold nugget of my life highbanking -- Weighing in around 6 grams. What's unusual about it is that.... it's coated with something black (manganese oxide I am guessing). My claim is in Virginia near an old hard rock mining operation.

    I used soap and a toothbrush to bring out more of the gold color... but now I'm not sure what to do with it... do I clean it more? Put it in a rock tumbler? Muriatic acid? Or leave it Au natural? Would love to hear your thoughts.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  2. #2
    us
    Mar 2003
    Redding,Calif.
    5,756
    6426 times
    All Types Of Treasure Hunting
    Simple bleach will clean the oxides off ,and not tarnish it, but it really looks more like a pt. group metal to me for some reason. If so at 6 gram+- worth a pretty penny either way-John

  3. #3
    us
    Jun 2017
    Virginia
    Nokta AU Goldfinder
    71
    169 times
    Prospecting
    Quote Originally Posted by Hoser John View Post
    Simple bleach will clean the oxides off ,and not tarnish it, but it really looks more like a pt. group metal to me for some reason. If so at 6 gram+- worth a pretty penny either way-John
    It's not a very good picture because I took that right before A thunderstorm so it was really dark. I am uploading a picture taken in the sunlight and it looks much more like a Gold nugget then. Thank you for the suggestion!!
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  4. #4
    us
    Hunting Guide - Gold Miner

    Mar 2014
    Idaho
    113
    454 times
    Prospecting
    The use of soap and a toothbrush seems to have done a remarkable job of taking some of the tarnish off. I have had many pieces of gold with the same manganese oxide "stain" and saw some good results cleaning them with a diluted nitric acid solution. I typically start off with a 50/50 mix of nitric acid and water, leaving the gold sit in this solution for several days or better. During such time , I do shake it once in a while (just because i can't help myself but think it helps speed up the process. Lol). It's not uncommon for me to make this solution slightly stronger but I have never pushed the envelope than using more than 2/3rds acid and 1/3rd water. Any stronger and I believe there will be risks of the acid eating away at the gold. Patience is the key here and so I suggest beginning with the weaker solution and let it work for you. Just my 2 cents on the subject . Nice nugget by the way. Cheers to you.
    Last edited by IdahoGoldGettR; Jun 26, 2017 at 10:37 AM.
    Aufisher and davin like this.

  5. #5

    May 2013
    The Golden State
    Whites Goldmaster V/SAT. VibraProbe. Bazooka 48" Prospector Sluice. Shorts. Chickens + Goats + Goldhounds. 35' Chris Craft Caribbean motorsailer. FISH OIL + BURLAP
    1,892
    4666 times
    Prospecting
    Nice nugget! I would leave it black and then play with it every day until it glows!
    I am a teacher, hydrologist, biologist and a prospector.

  6. #6
    us
    Hardrock prospector

    May 2017
    Middle Oregon
    Whites, Fisher, Garrett, and Falcon.
    935
    309 times
    Prospecting
    Hello
    Nice nugget and thanks for posting.
    Aufisher likes this.

  7. #7
    us
    Jun 2013
    Tennessee
    5,448
    4178 times
    Congrats on a nice Gold Nugget! If you ever plan on selling it in it's Nugget form, it would be best to remove the blackening from it. I say this, because it might be a hard sell with the black on it with potential Buyers questioning whether it truly is Gold.


    Frank

  8. #8
    ca
    May 2017
    Edmonton canada
    Just the eyes .....I don't think they would trust me with something as technical as a detector
    28
    53 times
    All Types Of Treasure Hunting
    I'd leave it black and drop that sucker in a fishtail for safe keeping ......."no one ever checks the fish tank"
    - did I actually just reach in there?

  9. #9
    Charter Member

    Sep 2014
    Midwest, North of 3660'
    1,761
    2071 times
    All Types Of Treasure Hunting
    Well yeah, no burglar is gonna grab the aquarium.

    Nice nugget.
    Aufisher likes this.
    I cannot make you think. I can give you something to think about, but whether or not you choose to think about what is offered and how you think about it is entirely up to you. In the same manner, I cannot make you get offended. I have no control over your behavior. Getting offended, or keeping your cool is your choice. It is all up to YOU cupcake!

  10. #10
    us
    Jan 2012
    Oregon Coast
    White's V3i, White's MXT, and White's Eagle Spectrum Cleangold sluice & prospectors pan, EZ-Gold Pan, and custom cleanup sluice.
    1,251
    1700 times
    Beach mining, Metal detecting, Trading.
    I would leave it as is.... It is worth more to a collector that way and a collector will know what he is buying.
    trdking likes this.
    We hold these truths to be self-evident: that all men are created equal; that they are endowed by their Creator with certain unalienable rights; that among these are life, liberty, and the pursuit of happiness. Thomas Jefferson

    Which is also why we have the second
    amendment.

  11. #11
    us
    Randy

    Feb 2015
    Fullerton CA
    Minelab CTX 3030
    2,509
    3234 times
    All Types Of Treasure Hunting
    Quote Originally Posted by johnedoe View Post
    I would leave it as is.... It is worth more to a collector that way and a collector will know what he is buying.
    John D Is absolutely correct. Do not clean it. It is worth more than 3x the gold weight as a collector specimen and they want it Aunatral
    Anything That Comes Out of The Dirt Is Awesome!

    Best find 1941 Patek Philippe 2 register flat pusher Chronograph Bought 1,000 Sold 62,000 !!
    First Year 911 Porsche Purchased 36K SOLD 140K!!! Whoo Hoo

  12. #12
    us
    Randy

    Feb 2015
    Fullerton CA
    Minelab CTX 3030
    2,509
    3234 times
    All Types Of Treasure Hunting
    Here is mine! a little over 1ozt Click image for larger version. 

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    Anything That Comes Out of The Dirt Is Awesome!

    Best find 1941 Patek Philippe 2 register flat pusher Chronograph Bought 1,000 Sold 62,000 !!
    First Year 911 Porsche Purchased 36K SOLD 140K!!! Whoo Hoo

  13. #13
    Charter Member

    Sep 2014
    Midwest, North of 3660'
    1,761
    2071 times
    All Types Of Treasure Hunting
    You found a one ounce nugget and you are still drinking Pabst Blue Ribbon?
    trdking, Aufisher, russau and 6 others like this.
    I cannot make you think. I can give you something to think about, but whether or not you choose to think about what is offered and how you think about it is entirely up to you. In the same manner, I cannot make you get offended. I have no control over your behavior. Getting offended, or keeping your cool is your choice. It is all up to YOU cupcake!

  14. #14
    us
    Randy

    Feb 2015
    Fullerton CA
    Minelab CTX 3030
    2,509
    3234 times
    All Types Of Treasure Hunting
    Quote Originally Posted by Duckshot View Post
    You found a one ounce nugget and you are still drinking Pabst Blue Ribbon?
    Yes Sir! Only the finest for me!

    I inherited this nugget from my Dad. He found it scuba Diving/ Prospecting the middle fork of the feather river in 1958. Started a gold fever that almost divorced him from my mom Can you blame him?
    Anything That Comes Out of The Dirt Is Awesome!

    Best find 1941 Patek Philippe 2 register flat pusher Chronograph Bought 1,000 Sold 62,000 !!
    First Year 911 Porsche Purchased 36K SOLD 140K!!! Whoo Hoo

  15. #15

    Apr 2007
    Clearwater, FL
    2,894
    783 times
    All Types Of Treasure Hunting
    First off - test it
    brady
    63bkpkr likes this.

 

 
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