Achieving Accurate Metal Detector Discrimination
December 2019 by Chris Ralph
Your odds of going home with gold will be higher using the discrimination mode, even if you might have misread one of the targets you rejected.
Lots of prospectors are trying out nugget detecting for the first time and finding out that it isn’t all that easy. In fact, in my opinion, metal detecting for nuggets is perhaps the most difficult form of prospecting that one can take on.
The signal I was hearing was coming from a vertical bedrock crack on the bank of the creek. I removed my backpack, took out my crevicing tools and started to clean out the crack when I saw a glint of gold.
It was time to prime the pump and start the engine! Dan’s priming method is to use a small, submersible, 12-volt pump. My priming method is to use a hand-operated diaphragm pump.
Because the forces of erosion and gravity tend to carry lighter materials like quartz away more easily, the heavy minerals like gold or silver will tend to be concentrated in the general area around the vein outcrop. These concentrations are what make residual placers so attractive.
Many suggestions had some pieces or parts that would work some of the time, but Dredger Dan’s suggestion was, in my humble opinion, the cleanest, cleverest, and most dependable.
I am learning more about gold deposition in this area than I knew previously. I am passing this information on with the hope that many of you will be able to locate patches and lines a little easier in the future because of this article.
The Bawl Mill • Ask The Experts - How do I obtain a map of Montana gold & sapphire gravel bars? • Ask The Experts - How do I process this white quartz with black striations? • Ask The Experts - Does gravel + bedrock = gold? • Back to Green Valley--With A Sluice • A Lesson In Underwater Sniping • More Fiddling While Forests Burn • My New Passion--Crystal Hunting • The Half-Mile Claim • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Gold Prospecting for Better or Worse: White Knuckle Mining