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...
Your Guide to Prospecting in Alaska
May 2013
Alaska is getting a lot of interest these days, not least because of all the gold prospecting shows on television. Hardly a month seems to pass without some new prospecting show being announced, and a couple of the most popular feature Alaska.
Alaska is getting a lot of interest these days, not least because of all the gold prospecting shows on television. Hardly a month seems to pass without some new prospecting show being announced, and a couple of the most popular feature Alaska.
The Fire Assay of Carbon
February 2016
Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.
Carbon, activated charcoal, or “char,” as some old timers refer to it, can be an assayer’s nightmare.
The Bawl Mill
January 2013
• Run for the border
• By the numbers
• Run for the border
• By the numbers
The Paradox Basin—Part I
July 2005
In the four corners region of America there is a place—a very special place—called the Paradox Basin. It appears empty, but is quite full if you look at it from the correct perspective.
In the four corners region of America there is a place—a very special place—called the Paradox Basin. It appears empty, but is quite full if you look at it from the correct perspective.
Waldo Miners File Suit
October 2003
On August 29, 2003, the “Miners” (Waldo Mining District, along with Bob & Lesa Barton of Armadillo Mining Shop) filed Complaints in US District Court for the District of Oregon (Medford) against the United States Forest Service, Scott Conroy (in his official capacity as Forest Supervisor of the Siskiyou National Forest), and Secretary of Commerce Donald Evans.
On August 29, 2003, the “Miners” (Waldo Mining District, along with Bob & Lesa Barton of Armadillo Mining Shop) filed Complaints in US District Court for the District of Oregon (Medford) against the United States Forest Service, Scott Conroy (in his official capacity as Forest Supervisor of the Siskiyou National Forest), and Secretary of Commerce Donald Evans.
Legislative and Regulatory Update
June 2005
• Funds eliminated for federal land acquisitions
• ANWR leasing
• GAO scolds Fish & Wildlife
• Red Rock wilderness proposed again
• BLM websites still down
• Karuk lawsuit update
• Funds eliminated for federal land acquisitions
• ANWR leasing
• GAO scolds Fish & Wildlife
• Red Rock wilderness proposed again
• BLM websites still down
• Karuk lawsuit update
Ask The Experts: Can you review the differences in dry washers?
March 2017
Q: What are the advantages or disadvantages of hand crank vs. battery power vs. blower? And your preference?
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The Bawl Mill
• Our Readers Say
• 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
