Prospecting for Gold at Green Valley
December 2012 by Don RobinsonIn October, five of us decided to take an exploration trip into an area called Green Valley. This was perhaps ten miles upstream from where we had gone in September and the difficulty was access. One would think that based on the name it was an easily accessible area not far from a nearby town. This couldn’t be more wrong.
Federal and state regulatory agencies often cite mercury and methyl mercury in our waterways as a major factor for further restrictions on placer mining, and on suction gold dredge mining, in particular. However, these regulatory agencies are minimizing selenium and its neutralizing effects.
Wouldn’t it be great if you could know if there is gold in the ground without setting foot on the ground? Well you can, to a certain extent, if you can recognize mined ground from unmined.
Perhaps the most notable thing about skim placers is that they form on the top surface of gravel bars, as opposed to coarser gold placers where the weight of the gold particles allows the gold to settle down on or near bedrock.
The first requirement is permission from a land owner. This can be tricky and it’s always a bit nerve-racking to approach a stranger cold with such a request.
The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.
We were met with a plethora of mechanical problems with the dry washer and even a few with the excavator that were at times frustrating, but we were in this for the long haul, so we needed to solve these problems and move forward.
Some experienced panners with the vigor and longevity to spend a full day panning in the small creeks and ravines can possibly find as much as a gram or more on a good day.
The Bawl Mill • Ask the Experts • Legislative and Regulatory Update • Extraction of Precious Metals Using Froth Flotation • Detecting Old Ground Sluice Locations • Mineral Deposit Trends: Real and Imaginary • Four Arrested for California Mining Museum Heist • Scams, Scammers and Schemes • Lawsuit Update From the New 49'ers • Constitutional Sheriffs Standing Up for Our Rights • What's Left Behind • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices