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 Replies: 22 / Views: 2,552 |
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Pillar of the Community
United States
7629 Posts |
another way to test these without a scale is to drop the coin on a table with one you know is normal. If they make the same sound, they are probably both made of the same metal.
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Pillar of the Community
United States
3507 Posts |
I brightened the pictures a little bit and the pictures are helpful but not conclusive.
This coin seems to have more detail visible than most plated coins that I've seen.
I would continue checking this one out as to weight and I would try to 'perhaps' get a friend to take a digital picture so that you could post that.
Although it is likely microplated, I wouldn't give up on this one just yet.
Thanks,
Bill
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Valued Member
United States
405 Posts |
Good test to see if its mercury is to swallow it. If you die, it's probably mercury.
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Bedrock of the Community
United States
62064 Posts |
If you don't die, then you will probably have all the copper you need till it passes? Mercury looks nice and silver colored when it is applied, but later turns dark and poisonous. Scanning a coin. If you place a darker piece of material over the coin it takes out some of the contasting color because of the white backdrop of the scanner. On my scanner it will crop the area around the back material and remove the white unwanted area of the scan. Setting you scanner for a higher DPI setting will also improve your images. Here are a few images. See if you can figure out what is wrong with each image. Answer below images. High lite that area.    These coins weren't minted those years!Edited by coop
09/02/2008 2:00 pm
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Bedrock of the Community
United States
17884 Posts |
A decent quality electroplating will cover the coin without losing any of the fine details. A quick flash plating can give you a good color and still only be a few millionths of an inch thick
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Pillar of the Community
United States
1807 Posts |
See if you can figure out what is wrong with each image.
The picture is on a black background.
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Pillar of the Community
United States
860 Posts |
SeattleMD, I thought elemental mercury ( quicksilver) was not absorbed through the intestinal tract, contrary to methyl-mercury which is passed through the food chain multiplier. Perhaps I remember wrongly.
Jim
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Valued Member
United States
405 Posts |
I didn't even know there were different types of mercury, so ya, you win :)
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Pillar of the Community
United States
5318 Posts |
Coop, you got me curious--are these digitally edited or are they fakes?  |
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Bedrock of the Community
United States
62064 Posts |
Photo-shop. I've got quite adept with it. Probably no one would have caught on if I hadn't mentioned it.
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Pillar of the Community
United States
3507 Posts |
Of course some of us would have:-)
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Pillar of the Community
United States
5318 Posts |
Coop, you do some cool stuff with PS!  It's also a cautionary lesson that any coin photo can be doctored with enough expertise. |
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Pillar of the Community
United States
1571 Posts |
The problem with mercury, is not in the eating so much, as in the HEATING. The vapors are very poisonus, (sp). That was one of the very first thing the old gold miners found our when they were amalgamizing the gold, (disolving the gold with the mercury, and then putting in a potato to "bake the mercury off, leaving the gold pellet. The portato was poisoned, and the fumes from the baking caused more than a few miners to die.
Latr: I was trying to remember the name of the natural state in which mercury, or 'quicksilver" appears. I think it is feldspar. The pellet, bythe way will appear to be a golden piece of cheese, not a solid nugget. getting back to the vapors, the first thing we were warned about was the mercury vapor rectifier tubes, used th "rectify the AC, voltage to Pulsating DC". All electronic equipment used the vacuum tubes. The rectifier, was just one of them, BUT the most dangerous, as well.
Dick
Edited by livingdinasaur
09/05/2008 02:12 am
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Bedrock of the Community
United States
17884 Posts |
The most common natural occurring mineral form of mercury is cinnabar. there are at least 28 other mercury bearing minerals as well but most of them are rare. Here are 20 of them.
aurivilliusite, clearcreekite, deanesmithite, edgarbaileyite, edoylerite, hanawaltite, peterbaylissite, wattersite, szymanskiite, tedhadleyite, vasilyevite, montroydite, schuetteite, calomel, gianellaite, mosesite, terlinguaite, eglestonite, metacinnabar, and donharrisite.
Feldspars come in different forms and have no mercury. The minerals associated with them are Potassium, Aluminum, Calcium and Sodium.
Edited by Conder101
09/05/2008 1:17 pm
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Pillar of the Community
United States
5318 Posts |
We have an old Cinnabar mine near where I live--the New Almaden mine. This was active from Spanish colonial days through the gold rush, and I'm sure it supplied all the needs for mining. To this day, you cannot eat fish taken from local lakes due to mercury accumulating in the food chain.
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Posted 08/31/2008 11:57 pm
