Prospecting & Detecting
Potholes and Other Bedrock Traps
September 2012 by Jim Halloran
Potholes in bedrock can trap placer minerals and even be glory holes. They are, at least, interesting geologic phenomena, and at best, a treasure trove of gold nuggets.Good Assays and Bad
The high prices for gold and silver are exciting and certainly have revolutionized the prospecting and mining scene. New interest in gold and silver mining is springing up from every corner, from individual prospectors armed with gold pans to exploration and mining companies working to set up multimillion dollar commercial operations producing hundreds of thousands of ounces per year. The idea of getting riches from rocks is one that motivates a lot of folks all over the globe. It’s an exciting time, but this excitement brings out another side...
Finding Gold with a VLF Detector—Part III
The higher the sensitivity setting, the louder and sharper the signal from a gold nugget or other metal target.
Sampling Placer Stockpiles
Sampling other people's stockpiles or dumps has some inherent risks that sampling undisturbed ground does not have.
Hunches, Choices and Guesses
When you approach a location, even if you've been there before, you should consider all the factors and conditions present at the site. This includes both natural and man-made factors.
Determining The Optimal Crushing Size for Gravity Recovery
It’s not easy to figure out what is best without testing, and so a certain level of confusion has developed about how small the ore ought to be crushed.
Who Jumped Whose Claim First?
At this point, stress raised my blood pressure and I was figuring out escape routes through the brush, but thought it best to continue the conversation.
Resurrecting An Old Hard Rock Mine
There were nice sections of vein material at the end of several drifts, like they just stopped work one day and walked away.
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The Bawl Mill
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• Wild and Scenic River Prospecting—North Fork of the American River
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• Wealth Beyond Your Wildest Imagination
• Gold Too Big to Carry
• The World of the Simple Gold Pan
• New Silver and Zinc Mine Slated for Montana
• Eastern Oregon Mine Seeks Permits
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• BLM Issues Environmental Review of Wyoming Uranium Mine
• Melman on Gold & Silver
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