Written by the TreasureGuide for the exclusive use of the Treasure Beaches Report.
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| Closeup of Corroded Beach Found Clad Quarter. |
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| Closeup of Corroded Beach Found Silver Quarter. |
I've been talking about doing something for twenty years or so but have never done it. I wondered how long it takes for silver coins to turn black. I talked about doing an experiment to find out, but never did.
If you look at a clad coin, you can easily see the difference. Saltwater affects clad coins (copper and small part nickel) too, but in a different way. If I had a better knowledge of chemistry, I could describe the corrosion process. From what I've read, the corrosion products might be cuprous oxide, iron oxide, cuprous hydroxychloride and cupric oxide. On the coin shown above there appears to be three layers.
So why care? If you could read the corrosion, you might get a decent idea of not only how long a coin has been on the beach, but also where it has been. You'd get some clues about where it has been all those years and therefore where to look for more such coins. You might be able to tell if it has been in the dunes, or in the salt water, or both.
You'll notice that some of the treasure TV shows keep finding stuff, and every find seems to raise more questions instead of answering any significant questions. Bumbling around keeps the series going, which works out for them, but they never get any answers.
They try this, that and everything in the world, but they never develop "testable" hypotheses. That is why they never get any real answers.
Here are the basics to a scientific investigation.* Create a hypothesis that explains the phenomena.
*Use this hypothesis to attempt to predict other related phenomena or the results of another set of observations.
*Test the performance of these predictions using independent experiments.
You don't have to do the kind of rigorous research that would be acceptable for academic publication, but a disciplined scientific attitude and approach will help you get answers.
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| Source of Image: See Avro Arrow | The Canadian Encyclopedia |
Researchers from Raise the Arrow, an expedition led by the OEX Recovery Group, showed the newly captured images during a press conference in Toronto on Friday.
The sonar images and video, captured by a remote-operated vehicle, show a murky descent of about 30 to 40 metres to the bottom of Lake Ontario where the damaged free-flight model is visible lying upside down...
Here is that link.
Underwater images confirm Avro Arrow test model in Lake Ontario, searchers say | CTV News
Also see Avro Arrow | The Canadian Encyclopedia
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We are having a west wind and small surf. That presents opportunities too.
There are low tides in the morning.
Good hunting,
Treasureguide@comcast.net