History & Geology
Ask The Experts
March 2015 by Chris Ralph
Q: Is this gold or some other metal?The Wild Rush To Find More Cobalt—Part II
In this second part on cobalt, I will take a look at the various types of cobalt deposits and how you can prospect for them. Who knows—perhaps the next big cobalt strike will be yours.
Understanding and Prospecting Benches
The most obvious benches are usually near the valley floor, but they can be thousands of feet above the valley floor. Since benches were made by streams, they can contain placer deposits.
A Short History of Hydraulic Mining in California
To add to the confusion, the dam wasn’t holding back a large amount of water. It was full of gravels and had a small creek running through it. I had to know more.
The Basics of Geophysical Exploration
In developing a mineral property or mining claims, one of the first goals is to identify and quantify valuable deposits. The classic method of doing this is by drilling holes into the ground to sample what is below the surface. The problem is that one or two holes usually are not going to tell you a whole lot...
Prospecting for Diamonds in Kimberlite
Kimberlite is very difficult for geologists to find, let alone prospectors and rock hounds. This is because kimberlite is rarely exposed on the surface and few people know how to identify the rock.
Rand, Red Mountain, Atolia Mining Districts of Kern and San Bernardino Counties, California
This area could be re-evaluated for placer scheelite and gold potential in the future along with sand and gravel processing…
Mineralized Faults and Contacts in the Search for Gold
Fault zones and rock contacts are important because the vast majority of gold and silver deposits, as well as those of many other metals, are formed by hot, mineralized water solutions.
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The Bawl Mill
• Our Readers Say
• Ask The Experts
• Ask The Experts
• Just Another Ordinary Weekend
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• The Paragenesis of Gold & Silver Deposits
• Getting A Successful Start in Metal Detecting for Gold
• Placer Mining At Chititu Creek, Alaska
• Gold Rush Continues in Africa
• Gold Refining In The Ancient World
• Tasers and Mining Don't Mix
• Thinking Outside The Creek
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
