Prospecting for Copper—What to Look for on the Outcrop
August 2020 by Tom Turner
For the prospector, knowing what oxidized hydrothermal alteration looks like in the field is an important exploration tool.
…to see the huge differences between the gold production amounts of the Western States, let’s look at the gold production—both hard rock and placer—of these 13 states up to the present.
This explains the large difference in particle sizes between placers and hydrothermal lode deposits, but also means that while the mining may be similar in some cases, the sampling and recovery techniques are usually quite different.
The next hurdle to jump was whether the trommel motor would start again after sitting on the desert for six years without being started. The last time it had taken a three foot pipe wrench to bust it loose.
May 18, 2019, after 26 years, I had finally saved enough money. I bought my one-way ticket to Fairbanks, Alaska, and I started off by finding a new job…
…my intent is to distribute this information in layman’s language so that even the “backyard/shade tree/mom & pop” fire assayers can benefit.
Before I tell you what dredging backwards is, I’ll tell you why my team and I decided to give this very unconventional dredging method a try.
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
The Bawl Mill • Ask The Experts - Where can I obtain chemicals for flotation? • Ask The Experts - Can I get an update on your efforts in DC? • Ask The Experts - What equipment do I need to enter an old lode mine? • Hard Work Pays Off On Hard Rock • The Mysterious Telluride Minerals • Detecting: Getting Away From The Heat And Into The Gold • The Coolgardie Gold Mining Camp of Southern California • Gold Prospecting for Better or Worse: How Curiosity Burst My Platinum Bubble • Dredging Tips and Tricks: A Measure of Water Pump Efficiency • Hard Rock 101: Small-Scale Blasting • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices