Enrichment of Mineral Deposits by Weathering—Part I
March 2016 by Chris RalphThe 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.
A Wilfley table works best when all of the mineral being run across it (the pulp) is about the same size. For this reason, I took a good look at each of the samples.
It rained over four inches that night and the creek flooded both my backyard and my workshop. When I opened the door to my workshop Christmas morning, an unwelcome sight greeted me.
There are three basic power sources for rock drills—electricity, gasoline and compressed air. Before we go into big pneumatic drills, we’ll start with a quick rundown of each.
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.
How do I set up a small placer operation?
It is this ability to hear and respond to the faintest of audio signals that I believe separates the best nugget hunters from everyone else.
The technique I will describe is a much safer alternative and it works. It’s a fine-gold panning technique that eliminates the need for mercury amalgamation of most placer samples.
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts • Ask The Experts • Ask The Experts • How to Stake Your Own Mining Claims—Part I • Addressing EPA Overreach: What Dredgers Need to Know • Green Valley Gold District, Payson, Arizona • Nevada's Silver City Gold District—Part I • Alaska: Kodiak Islands Mineral Resources • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices