Prospecting & Detecting
Ancestral Yuba River Placer Gold Deposits
November 2020 by David Lawler
The small-scale miner has reasonable opportunity to exploit some of these small, rich placer gold deposits.
A Break in the Weather
Back at the entry point of the mine, we took turns slowly crawling down the slope leading into the mine portal with our metal detectors, hard hats and flashlights. The mine was hand dug and is about 75 yards long.
Highbanking for Gold
Pumps can be set up quite a distance away horizontally from the sluice, even hundreds of feet. It will work so long as there is sufficient water at the source where the pump is located. Vertical distance is more of a problem than horizontal distance; 30 to 40 feet is the maximum vertical climb for most pumps.
How Rich Must My Ore Be?
How rich does a hard rock ore have to be for it to be worthwhile to process and extract the gold?
Cherry-Picking for Gold Nuggets
We have a location where nuggets over an ounce have been detected over the past twenty years. This location is a small hilltop on which an ancient river channel once flowed.
Get The Lead Out!
If you do the math, it equates to about $1,500 of heavy metal value per three-hour dive. This is good wages, and you are doing a service to the environment by removing this toxic metal.
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