Mud Men: Pocket Miners of Southwest Oregon Part III
April 2011 by Tom BohmkerThe amount of gold in the traces from the low-grade scattered veinlets may be much more than the traces from the small but rich pocket, at least until the pocket hunter closes in on the rich pocket. Further confusion arises if the prospector stumbles across a placer deposit on one of the higher peaks.
Lately I’ve been having success utilizing two types of detectors in succession. The first is a pulse induction (PI) detector with a blanket-style antennae, and I follow it up with a very low frequency (VLF) detector.
Within this area, about two million ounces of gold and fifty million ounces of silver have been mined. Faults, dikes, veins and fissures that carry the ore form a concentric radial pattern—like spokes on a wagon wheel—around the caldera core.
Even with my favorite top-of-the-line gold detector there were several false digs. Many of the hot rocks gave a solid signal that was too much like a nugget to ignore. After trying several tests I just dug everything because it is better to be safe than leave a big, deep nugget for a more diligent gold hunter.
I understand that a person without geological knowledge could be daunted reading a geological publication. You can pick out the good stuff from a geological publication without a lot of geological knowledge.
This article will hopefully provide a few constructive hints on how to use your downtime during the cold winter and the wet spring to best prepare for the upcoming nugget-hunting season.
“Much of the ground where Ms. Hollingshead found her diamond is made of unweathered volcanic rock. When it rains, flowing runoff often leaves loose gravel, and sometimes diamonds, on the surface in these areas.”
There are not a lot of tools needed to get out and take advantage of the situation. Other than my wetsuit, I typically travel light with a gold pan, maybe a pry bar and a few crevice cleaning tools.
The Bawl Mill • Mining Claims—What to Know Before You File • Prospecting Underground: Use Caution • Small-Scale Concentrating and Recovery Methods • 5th Circuit Ruling May Benefit Miners • Indicator Minerals for Gold & Silver • Legislative and Regulatory Update • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Silver Mining Returning to Texas