History & Geology
How Mesothermal/Orogenic Gold Deposits Form
August 2021 by Chris Ralph
These deposits are very widespread across the planet. In fact, they are so extensive that something around 75% of all the gold ever mined comes from these types of deposits (if one includes the placer deposits that also formed from them).
The Mineral Range Districts of Utah
Most of the commercial mineral deposits are on the south and southwest part of the range between Minersville and Milford, though small amounts of gold and silver have also been found in iron-rich outcrops in the basalt to the south of Milford.
Why Is The Gold On Bedrock—Or Why Is It Not?
Gold on the bedrock is a good rule of thumb, but not one that is 100 percent effective. There are plenty of exceptions. So, how does a prospector recognize those exceptions?
Prospecting for Silver Deposits
![](http://www.icmj.com/userfiles/images/201508/35-silver-deposits.jpg)
Ganes Creek After The Flood
![](http://www.icmj.com/userfiles/images/201410/1-ganes-creek-gold-2014.jpg)
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…
Eolian Placer Gold
![](http://www.icmj.com/userfiles/images/201202/TOC-eolian-placer-gold.jpg)
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• Reminder: Annual Claim Filings and Fees Due
• Melman on Gold & Silver
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