Following the Clues
May 2019 by Ray Mills
It took me awhile before I finally got a nice mellow signal. My nugget turned out to weigh in about two dwt (pennyweight). Over the next few hours, we all picked up a few more nuggets apiece.
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.
The placer deposits of Utah occur in two distinct types of environments. These are 1) placers found adjacent to, and derived from, gold, silver and base-metal deposits; and 2) placers found in major rivers and derived from unknown, distant sources.
So why would a modern-day prospector want to learn about a method of mining that was banned by the courts more than a century ago?
It is the eighth largest brown diamond to be found and certified by park staff.
While a large number of locations have yielded some placer gold, most of the state’s placer production has come from a few productive districts.
Oleophilic means "affinity to or attracted to oils," and this includes gold an diamonds.
Part I of the article addressed modern placer gold deposits. This second installment will address “ancient” flood deposits.
The Bawl Mill • Legislative and Regulatory Update • Ask The Experts - Who owns this historic mill and how do I handle possible mercury contamination? • Ask The Experts - Sampling and assays • The Geology of Diamond Deposits • Keep Watch for The Unexpected • Resurrecting An Old Hard Rock Mine—Gold At Last! • Imagining the Ultimate Prospecting Adventure • Gold Prospecting for Better or Worse: Cold Gold • Gary It's There • A Generous Lesson on Detecting Bedrock • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices