November 2000 by Charles L. ButlerMost ore bodies generate a voltage, giving the prospector another valuable method of tracing and locating these hidden minerals. With the Oretron, one can sense and measure these voltages along the ground surface...
Since the 18th century, collectors, geologists and archaeologists have sought the answer to a frustrating mystery: The ancient Olmecs fashioned statues out of striking blue-green jade, but the stone itself was nowhere to be found in the Americas.
Walking around the gulch and exploring the upper drainage, picking up different rocks and inspecting them with a good loop, and looking them up in a field guide of rocks and minerals of your region will help you understand how the gold got there.
I stayed on the nozzle (about 25 pounds) and Dave moved rock. We worked the hole for two and a half days. Most of the time was spent moving overburden.
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.
A large, 8-pennyweight piece popped out of a very small crevice where the water had been extremely swift in the winter, leaving no visible gravel.
These are entry-level machines designed with gold prospecting in mind and with the ability to handle mineralized ground and see nuggets of a grain or so in size, perhaps smaller.
The Bawl Mill • Our Readers Say • Enrichment of Gold Veins • The Assay of High Iron Gold Ores • The Patch • History of Mining—Bradshaw Mountains, AZ (Part I) • Picks & Pans—The Green Rock, Rattlesnakes, Good Gold and Ruth's Mine • Silver Hill, North Carolina • Residual, Lateritic and Gossan "Soils" as Potential Nuggetshooting Sites • Hardrock in Downieville • Looking Back • Company Notes • Gold in Northern Baja California • California State Gold Panning Championship Results • Melman on Gold & Silver • V.P. Contender Addresses Mining Show