Prospecting & Detecting
The Essentials of Dry Washing
August 2013 by Chris Ralph
Most dry washers have a feed rate adjustment. It needs to be set so that the material flows evenly over the riffles and does not bury them.
Ask the Experts
What are the tell signs of garnet deposits?
Large Gold Deposit Types
It is not necessary to have a PhD in geology, but you need to know the basics, so that’s what I am going to try to dig into here—the understandable basics of these gigantic gold deposits.
A Return to Silver City, Idaho
...we were able to pull out close to another 3+ ounces of small, angular Silver City gold. This also included several more small nuggets, pieces of wire gold and some quartz-gold pieces—not bad for 4 days with a small sluice.
The Heavy Minerals in Your Concentrates
The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.
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...
Prospecting for Gold at Green Valley
In October, five of us decided to take an exploration trip into an area called Green Valley. This was perhaps ten miles upstream from where we had gone in September and the difficulty was access. One would think that based on the name it was an easily accessible area not far from a nearby town. This couldn’t be more wrong.
It Pays to Know Your Bedrock
On our last trip, we brought ropes and went down the first waterfall forty vertical feet, only to be confronted by a second, sixty-foot-high, overhanging waterfall that emptied into a slot canyon.
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• Common Mistakes of the New Detectorist
• The Pearce Mineralized Area, Dragoon Mountains, Arizona—Part II
• Mining for Gemstones and Mineral Specimens
• Fighting and Winning Without a Lawyer
• Fortymile, Alaska Prospecting Adventure
• Court Says Emergency Rule in California Unjustified
• Sampling Placer Stockpiles
• Lower Prices Bring Layoffs
• Prospecting Research
• Buyer Beware! Counterfeit Metal Detectors
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Underground in the Original 16-1 Mine
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