History & Geology
ICMJ Visits Sumpter Oregon, Gold Mining Town
October 2023
© ICMJ's Prospecting and Mining Journal, CMJ Inc.
Additional articles that might interest you...
Gold and Silver Deposits of Bodie, California
November 2019
Bodie, California, in its heyday, was once rumored to be one of the roughest and most lawless towns in the American West.
Placer Gold Deposits of New Mexico
February 2019
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.
California's Mother Lode Quartz Veins
May 2015
The actions of the hot, ore-bearing solutions are not limited only to the deposition of material within the walls of the fissures.
The actions of the hot, ore-bearing solutions are not limited only to the deposition of material within the walls of the fissures.
Round Mountain, Nevada
May 2014
There are a number of veins in the disseminated mineralization, but the principle ones on Round Mountain are known as the Los Gazabo and the Keane.
There are a number of veins in the disseminated mineralization, but the principle ones on Round Mountain are known as the Los Gazabo and the Keane.
Gold in Tertiary Gravels
November 2015
In some places, semi-continuous sections of riverbed can easily be linked in many places to identify the path of the ancient rivers.
In some places, semi-continuous sections of riverbed can easily be linked in many places to identify the path of the ancient rivers.
The Goldfield Mining District -- Then and Now
March 2017
In 1983, some of the ore yielded more than 2,500 ounces of gold within 30 feet of the surface. The shoot pinched to a narrow vein.
In 1983, some of the ore yielded more than 2,500 ounces of gold within 30 feet of the surface. The shoot pinched to a narrow vein.
The Paragenesis of Gold & Silver Deposits
March 2015
…if you are game for digging in and learning more about the intricate details of how gold deposits form, then let’s jump right in.
…if you are game for digging in and learning more about the intricate details of how gold deposits form, then let’s jump right in.
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Sampling Mission in Placer County's Last Chance Mining District
• Discovering Nugget Hollow
• Google Earth Pro for Prospectors and Miners
• Finding Gold - Fact vs Fiction
• A Hole In One
• Drilling Down - Looking With Drill Bit Eyes
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The Bawl Mill
• Legislation and Regulation
• PLP Update October 2023
