Prospecting & Detecting
Clues for Detecting Ancient River Channels and Flats
March 2021 by Ray Mills
The gold in this area can get quite large. Most of the pieces are about half a pennyweight on average.
Using Countercurrent Material Flow to Improve Gold Recovery Efficiency
There is a material processing principle widely used in large milling operations to improve recovery that is poorly understood by most of the micro-mining and prospecting community...
Backwards Find
I furiously started pulling material out of the side wall and putting it in my scoop. It didn't take long to discover that the source of the scream was from a one-ounce chunk...
Memories of Shirttail Creek, Northern California
…for a few hours, we fervently dug for gold. After we did a cleanup, I couldn’t believe the amount we got.
Ask the Experts
What are the tell signs of garnet deposits?
Early Winter Detecting in the Sierras
The mine site consists of river gravels from an ancient channel covering over 20 acres, and the place is covered with very large river rock and small tree overgrowth.
Using Favorable Rock Types to Find More Gold
The more experienced prospectors know these lesser known spots are the types of places where big finds are still made.
Detectors: Past, Present and Future
Detectors were invented long before I was born, but it was in the 1960s when they started to become an item popular enough to power a fledgling industry. The key development was miniature transistor technology replacing the old fashioned tube technology of the 1950s, making lightweight, affordable detectors possible.
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The Bawl Mill
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• Ask The Experts - Why is the gold in these clays?
• Ask The Experts - Can you explain colloidal gold?
• Ask The Experts - Where did this kimberlite come from?
• Ask The Experts - Can gold particles combine to form a nugget?
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• What Is Your Grade?
• State of Idaho Looks to Invest in Gold and Silver
• Colorado Uranium Mining in the 1950s Boom
• Drywashing for Desert Gold—Part II
• Decoding Dredge Capacity
• I Just Tripped Over A Nugget
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
