All Articles
PGMs in California
September 2002 by Edgar B. Heylmun, PhD
The occurrence of platinum-group metals (PGMs) is rather widespread in California in placer deposits, but they are not of commercial interest as things now stand.
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Mud Men: Pocket Miners of Southwest Oregon Part II
March 2011
How many more clays seams lie adjacent to known shear zones and quartz veins in the pocket areas of southwestern Oregon?
How many more clays seams lie adjacent to known shear zones and quartz veins in the pocket areas of southwestern Oregon?
Gold in Quartz
February 2016
Because quartz and gold may be deposited together across a considerable range of temperatures, not all quartz veins are the same, and there are several different types of gold-quartz deposits.
Because quartz and gold may be deposited together across a considerable range of temperatures, not all quartz veins are the same, and there are several different types of gold-quartz deposits.
Ask the Experts
February 2014
Marketing other minerals recovered while gold mining
Marketing other minerals recovered while gold mining
Legislative and Regulatory Update
May 2015
Suction dredging court cases in California linger on
Suction dredging court cases in California linger on
Looking Back
July 2000
Excerpts from CMJ published 50 years ago this month.
Excerpts from CMJ published 50 years ago this month.
Fine Gold Panning Without Using Mercury
March 2012
The technique I will describe is a much safer alternative and it works. It’s a fine-gold panning technique that eliminates the need for mercury amalgamation of most placer samples.
The technique I will describe is a much safer alternative and it works. It’s a fine-gold panning technique that eliminates the need for mercury amalgamation of most placer samples.
Bill to Allow Mining of Coeur d'Alene Basin
April 2005
A state House committee supported legislation sponsored by Rep. Dick Harwood that would allow state mining leases for tailings and dumps, which Idaho law currently prohibits.
A state House committee supported legislation sponsored by Rep. Dick Harwood that would allow state mining leases for tailings and dumps, which Idaho law currently prohibits.
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