Old Mine Sites and New Technology
September 2018 by Jack Geck
We’ve had two trips to the deserts of Nevada and explored mines and mill sites, hiked miles of ravines in California, and swung our detector coils over thousands of square yards of bedrock.
I was amazed and surprised, and I took a moment to admire how beautiful this coarse chunk of gold was. It later weighed exactly one-half ounce.
We decided to run a detector over each piece. If we got a decent signal we placed the piece into a high-grade pile and the rest went into another pile to be worked on later. This high-grade pile wasn’t that large—maybe 25 pounds...
Looking for nugget laden bedrock in forested mountain regions, you first need to explore the banks of the gold-bearing streams and look for the bedrock that is exposed as this is your starting point.
Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.
I had been busy representing the Prospecting and Mining Journal this spring, but prospecting season finally arrived and I’ve been out digging for nuggets—I’ve even found a few. I know a number of prospectors who are armed with new metal detectors and headed to the hills to look for that precious yellow stuff.
The most commonly asked question in metal detecting is, “Which metal detector should I get?” People worry a lot about not getting the right machine. They do not want to waste their money and their time with the wrong metal detector.
We chose this particular area because an old channel had run here at one point and had been heavily worked on top of a mountain hilltop. Erosion patterns cut deeply on each side, leaving the channel exposed. The erosion cut sharply, dropping into ravines far below.
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