Mining for Gemstones and Mineral Specimens
August 2013 by Jim ClaninIt is better in a gem and mineral mining operation that the driller, blaster and mucker be the same person in order to be able to predict placement of the desired mineral enriched pockets.
As I started walking down to the river one chilly morning, the mist was hanging over the calm portions of the water like a white cotton blanket. This scene got me to thinking about why the river was like that—the deep pools, boulder fields, gravel bars, the effects of how much water was moving at any given time along the watercourse—and most of all the relationship all these things have on where I will be able to find gold.
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.
The very first thing to find out...is if the detector has the ability to be ground balanced.
I love to dry wash old nugget patches found by detector operators, and I have found my fair share of gold dry washing those areas. I have also found a few nuggets using a detector on the bedrock exposed by dry washing the patches.
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.
I suspect detailed geological mapping and prospecting would lead to discovery of one or more overlooked gold deposits in the district even though it has been heavily prospected in the past.
Mike scored the best with a total of one-half ounce of gold nuggets. Tom, Brian and Greg each had pieces in the one and a half pennyweight range. The rest of us had small gold and nothing like these three.
The Bawl Mill • Ask the Experts • Ask the Experts • Ask the Experts • Ask the Experts • Common Mistakes of the New Detectorist • The Pearce Mineralized Area, Dragoon Mountains, Arizona—Part II • Fighting and Winning Without a Lawyer • The Essentials of Dry Washing • 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