Southern Oregon's Illinois River—A Lesson in Sharing
November 2013 by Gary C. EarleOur theory was that a dredge would collect far more material in a shorter period of time, leaving us with ounces of gold every day.
In Chicken I had my first experience with the famous Alaska blue clay, sometimes called the blue layer. The blue layer is where the best fine gold was to be found.
Oleophilic means "affinity to or attracted to oils," and this includes gold an diamonds.
...I decided to excavate the semi-frozen high-bank that was resting on a soft shale bedrock footing. Within three feet, I encountered an intrusive!
It is important to note that discrimination is a type of electronic filtering. The signal is analyzed, and depending on the discrimination setting, identified as either a target to be dug or a target to be ignored.
I decided to focus my attention on some exposed bedrock that was along a little stream only about 100 yards from our cabins. My very first pan full of gravel showed several nice small flakes that were just big enough to be picked up with my fingers. That first pan showed that indeed there was some very nice gold to be had here...
Maybe we could find a few pieces of ore from that tunnel? It was worth a try. The old timers didn’t have that stamp mill for looks, so we set off to get some samples.
Rocks and minerals associated with clay seam gold deposits in southern Oregon are often in sedimentary rock units at least partially metamorphosed into argillite. They are also associated with mafic volcanic rocks, basalts and gabbro that...
The Bawl Mill • Ask the Experts • One Potato, Two Potato... • Proper Placer Sample Processing • Strategic Metals—Part I • Dry Washing to Capture Fine Gold • Are There Any Good Prospects Left? • Ophir—Possibly the Best Kept Secret in Alaska! • Using Sucker Guns to Find Gold • Making Adjustments to Catch Fine Gold • The Subsurface Suction Dredge • A Few Thoughts About Successful Nugget Hunting • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices