History & Geology
The Geology of Diamond Deposits
May 2019 by Chris Ralph
New theories have been developed and they may lead to new discoveries and give prospectors some new insight on where to look for diamonds.
Jadeite in California
...two jadeite locations in California have been thoroughly researched by geologists. There are no doubt others that lie in wait.
The Silver, Gold and Gemstones of Candelaria, Nevada
The Candelaria area is of interest to prospectors not just for silver, gold and other metals, but also for the beautiful gemstones found there.
The Long Road to Gold Point, Nevada
Apart from the hard rock mines, there are abundant gold-bearing placers, especially in the areas in and around Oriental Wash.
Associated Gold Placers of the Comstock
What many people don’t realize is that the Comstock Lode produced over 8,000,000 ounces of gold…
The Miner’s Switchback
Common thought is the switchback slows the velocity of the rushing water and gold drops out from the cut bank to a fill gravel bar within or below the switchback. I am not going to disregard that model; however, I hope to improve upon it.
Placer Gold Deposits of New Mexico
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.
Enrichment of Mineral Deposits by Weathering—Part I
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.
Subscription Required:
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
• 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
• Following the Clues
• A Generous Lesson on Detecting Bedrock
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
PLP Update
