All Articles
Greenstone Belts in Minnesota
August 2005 by Edgar B. Heylmun, PhD
Greenstone is a dark greenish-black basaltic rock which, along with chloritized schist, forms belts up to 50 miles wide in northern Minnesota, in rocks of Late Archean age. Most belts are 2.6 to 2.9 billion years old.Additional articles that might interest you...
The Joy of Prospecting
February 2004
I have been prospecting and mining for gold, both as a hobby and as an occupation, for nearly 30 years. From the deep green forests to the rolling sagebrush hills, few people see as much of America’s wide-open spaces as I do.
I have been prospecting and mining for gold, both as a hobby and as an occupation, for nearly 30 years. From the deep green forests to the rolling sagebrush hills, few people see as much of America’s wide-open spaces as I do.
The Bawl Mill
September 2016
• What comes around goes around...
• Bombs away for Texas nuclear materials inspection
• What comes around goes around...
• Bombs away for Texas nuclear materials inspection
Historical Mining Methods
May 2004
The discovery of gold at Sutter’s Mill in 1848 started the great gold rush to California. The account that drew national and worldwide notice was a small, two-inch item at the bottom of the front page of the March 15, 1848 issue of the “Californian,” published in San Francisco. The article was attributed to B.R. Buckelew, and mentioned quantities of gold just being “gathered.”
The discovery of gold at Sutter’s Mill in 1848 started the great gold rush to California. The account that drew national and worldwide notice was a small, two-inch item at the bottom of the front page of the March 15, 1848 issue of the “Californian,” published in San Francisco. The article was attributed to B.R. Buckelew, and mentioned quantities of gold just being “gathered.”
Oregon Miners Update
April 2007
The Siskiyou Regional Education Project (SREP) v. Siskiyou National Forest case over the requirement for plans of operation for suction dredge mining is now in the hands of the US Ninth Circuit Court of Appeals.
The Siskiyou Regional Education Project (SREP) v. Siskiyou National Forest case over the requirement for plans of operation for suction dredge mining is now in the hands of the US Ninth Circuit Court of Appeals.
Determining the Amount of Gold in Rich Ores
February 2016
This is just the type of specimen that could have been easily ignored by the old-time miners. It felt a little heavier in my hand than a chunk of quartz of that size ought to have been.
This is just the type of specimen that could have been easily ignored by the old-time miners. It felt a little heavier in my hand than a chunk of quartz of that size ought to have been.
Melman on Gold & Silver
April 2010
...the Obama Administration continues to grapple with the reality that the number of Americans who are growing disenchanted with government solutions to problems appears to be growing.
...the Obama Administration continues to grapple with the reality that the number of Americans who are growing disenchanted with government solutions to problems appears to be growing.
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The Bawl Mill
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• The Paradox Basin—Part II
• A Sleeping Giant
• Buying a Used Gold Dredge
• Looking Back
• Gold in Vermont
• Picks & Pans: Prospecting on Perry Creek
• 9th Circuit Court Hears Pilgrim Family Case
• The First Mine in America
• National Mining Hall of Fame to Induct Five
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
