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Detecting Invisible Gold
April 2009 by Chris Ralph
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The technology certainly has improved quite a bit over the years, so when these owners are testing various types of gold on their machines and they find that some gold responds poorly or not at all...
Additional articles that might interest you...
The Golden Highway—Nevada County
February 2005
Highway 49—the “Golden Highway”—heads northeast out of Placer County into a stretch of Nevada County that is almost as busy as it was during the Gold Rush. The neighboring towns of Grass Valley and Nevada City are still booming—a beautiful location to live in the Sierra foothills.
Highway 49—the “Golden Highway”—heads northeast out of Placer County into a stretch of Nevada County that is almost as busy as it was during the Gold Rush. The neighboring towns of Grass Valley and Nevada City are still booming—a beautiful location to live in the Sierra foothills.
Mud Men: Pocket Miners of Southwest Oregon Part II
March 2011
How many more clays seams lie adjacent to known shear zones and quartz veins in the pocket areas of southwestern Oregon?
How many more clays seams lie adjacent to known shear zones and quartz veins in the pocket areas of southwestern Oregon?
Cold Alaskan Gold—Part II
October 2012
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...
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...
Prospecting Old Tertiary Channels
September 2010
The potential exists for small-scale placer mining in these pits using a trommel and sluice box or other similar types of equipment.
The potential exists for small-scale placer mining in these pits using a trommel and sluice box or other similar types of equipment.
Buell Park Pipe, Arizona
July 2004
One of the world’s largest kimberlite pipes is located on the Navajo Indian Reservation in northern Arizona. The pipe is larger than any diamond-bearing pipe in South Africa. It is 16 miles north of Window Rock, the capital of the Navajo Nation.
One of the world’s largest kimberlite pipes is located on the Navajo Indian Reservation in northern Arizona. The pipe is larger than any diamond-bearing pipe in South Africa. It is 16 miles north of Window Rock, the capital of the Navajo Nation.
Recovering Values from Black Sands
May 2007
Every placer miner has to deal with it in one form or another, and some locations have it far worse than others, but nearly every placer has at least some of it: black sand. It collects in our concentrates and gets in the way of recovering our fine gold.
Every placer miner has to deal with it in one form or another, and some locations have it far worse than others, but nearly every placer has at least some of it: black sand. It collects in our concentrates and gets in the way of recovering our fine gold.
Over The Divide
August 2004
T. Lyle Taylor
Jan. 2, 1945 - Jun. 18, 2004
T. Lyle Taylor
Jan. 2, 1945 - Jun. 18, 2004
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