How To
Enrichment of Mineral Deposits by Weathering—Part I
March 2016 by Chris Ralph
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.
Resurrecting An Old Hard Rock Mine—Gold At Last!
We’ve been busy with a plethora of projects, all aimed at gathering gold into a pile big enough to brag about. We’re not there yet, but I’ll show you some of the interesting projects we’ve completed since we talked last.
The Essence of Gold Prospecting
When doing your initial armchair research and selecting potential areas to explore, consider all the indicators, both natural and man-made.
Operation And Application Of Magnetometers
The technology used in these devices has advanced greatly in the last century. Many different types of physical effects are used to measure these magnetic fields and we will briefly look at some of these.
Piggin' for Gold
Take a look at the picture—it’s pretty simple and you can build it yourself.
Dry Washer, Wet System or Metal Detector?
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.
Designing and Evaluating Placer Gold Recovery Plants
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
Finding Gold with a VLF Detector—Part I
The very first thing to find out...is if the detector has the ability to be ground balanced.
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