Would this be PMD?

Discussion in 'Coin Chat' started by John Anthony, Mar 17, 2016.

  1. John Anthony

    John Anthony Ultracrepidarian

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  3. Markus1959

    Markus1959 Well-Known Member

    That is too cool!!! Ocean find?
     
  4. John Anthony

    John Anthony Ultracrepidarian

    No, evidently it's what happens when you drop a penny into chemicals and stuff.
     
  5. Kentucky

    Kentucky Supporter! Supporter

  6. UnCommonCents

    UnCommonCents Variety Collector

    Let's see pcgs slab that puppy!
     
    C-B-D, TJ1952 and spirityoda like this.
  7. ken454

    ken454 Well-Known Member

    looks like something found by the Mars Rover....
     
  8. Rick Stachowski

    Rick Stachowski Motor City Car Capital

    Looks like it was carved out of a Maple Tree ....
     
  9. rlm's cents

    rlm's cents Numismatist

    I am going to guess someone tried making a battery and that was the cathode. But it is still need looking.
     
  10. John Anthony

    John Anthony Ultracrepidarian

    It's actually from a chemistry classroom. You drop the penny into some sort of solution and it grows copper crystals over the course of a few days.
     
    paddyman98 likes this.
  11. wiggam007

    wiggam007 Cut-Rate Parasite

    This appears to be the explanation from the original site the picture is from:

    How do you grow such beautiful copper and silver crystals?

    First we start with an electrolytic refining cell. This kind of cell is generally used to refine silver, copper, and gold. But during the refining process silver and copper are capable of forming crystals. Gold will not crystallize it only plates out, which works great for refining but isn’t nearly as beautiful.

    Next we create our solution. When growing silver crystals we take and dissolve pure silver granules into nitric acid and purified water using a boiling process. The process is complete when the granules are dissolved and the PH has risen from a 0 to a PH of 4. This solution is called an electrolyte solution and contains approximately 20 oz of silver per gallon.

    Now we take our electrolyte solution and pour it into the cell. A cell should be anywhere from two to four gallons. Then we take and submerge our plates. One plate is at least 92% pure silver and the other is stainless steel. Once the plates are submerged and secured we hook up the electricity. We attach the positive lead to the silver plate (anode) and the negative lead to the steel plate (cathode). Then using a DC trickle charge we run approximately one and a half volts through the cell.

    As the electricity runs through the cell the plate of pure silver starts to slowly dissolve. But as fast as the silver is dissolving into the solution the silver is being deposited onto the steel plate in the form of crystals. This is called an ion exchange.

    As the silver plate is dissolving it gives off a black sludge so a fine cloth bag is placed around the plate to collect the sludge for easier cleaning. This sludge contains all of the impurities from the silver plate. In this process an impurity is anything that isn’t silver such as gold, tin, zinc, and lead, but not copper. Copper is dissolved into the solution. So when the solution turns a dark blue color it is time to discard it, but not before the silver is removed to be used again.

    It takes about 24 hours for average crystals to form and three to four days for the bigger heavier ones. Once the crystals reach the desired size the plates are removed from the solution and the crystals are scraped off and cleaned with distilled water and allowed to air dry.

    There are several factors that influence how a crystal will form. The amount of electricity running through the cell, the amount of silver in the solution, even the temperature (the crystals prefer the warmer temperatures).

    The process for creating copper crystals is the same as with the silver, we simply switch out the silver and steel plates for copper ones and the silver granules with copper wire. And to create the copper crystals on the pennies we simply attach some copper pennies to one of the plates and watch them grow.

    http://www.wholesalegoldvials.com/2012/10/02/silver-and-copper-crystals/
     
  12. John Anthony

    John Anthony Ultracrepidarian

    Hey thanks @wiggam007 ! That's the problem with facebook posts - nobody bothers crediting the source. Well, I'm guilty of that as well - I just copied it here.
     
  13. wiggam007

    wiggam007 Cut-Rate Parasite

  14. John Anthony

    John Anthony Ultracrepidarian

  15. I am pretty sure that qualifies as artificial toning. :)
     
  16. tommyc03

    tommyc03 Senior Member

    1 magic rocks.jpg Very neat! Reminds me of those "Growing Crystals" we got as kids.
     
    wiggam007 likes this.
  17. Collecting Nut

    Collecting Nut Borderline Hoarder

    Try creating a few more and sell them on eBay. :)
     
  18. John Anthony

    John Anthony Ultracrepidarian

    I didn't create it, but I'm sure it WOULD sell on eBay. This would be a job for one of my sons, who's a bit of a mad scientist at heart. His default question is, "I wonder what would happen if..." Occasionally it's led to an ER visit, lol.
     
    Garlicus likes this.
  19. paddyman98

    paddyman98 I'm a professional expert in specializing! Supporter

    #1.. can we see the Obverse?
    #2.. your Cent picture is upside down
    ;)
     
  20. John Anthony

    John Anthony Ultracrepidarian

    Which makes me wonder how stable it is. Would it stay together if you moved it around, or crumble in your hands?
     
    paddyman98 likes this.
  21. Paddy54

    Paddy54 Well-Known Member

    You know I recall a movie where the kids grew one of these in the lab........ goes to show you education today just ain't what it use to be........... kelly-lebrocks-quotes-5.jpg
     
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