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...
Ask the Experts—How do you determine how far a piece of gold has traveled in a stream?
December 2011
The Bawl Mill
March 2011
• He can manage the taxpayers' money, but not his own?
• Government debt to reach yet another milestone...
• Speaking of ObamaCare...
• He can manage the taxpayers' money, but not his own?
• Government debt to reach yet another milestone...
• Speaking of ObamaCare...
Return to Chicken, Alaska
January 2015
I figured it would be quite conservative of me to shoot for about four ounces of gold instead of the twelve ounces I had found in 2013.
I figured it would be quite conservative of me to shoot for about four ounces of gold instead of the twelve ounces I had found in 2013.
The Boludo Placers, Sonora
November 2004
The Boludo placers described here include gravels that have been listed under many different names, including Altar, Golden Triangle, Llanos del Oro, San Francisco, and Trincheras, among others. The placers are on desert flats at the northwest end of Sierra Santa Rosa, about 2,600 feet above sea level. It is in a region of northwest-trending mountain ranges separated by broad desert valleys.
The Boludo placers described here include gravels that have been listed under many different names, including Altar, Golden Triangle, Llanos del Oro, San Francisco, and Trincheras, among others. The placers are on desert flats at the northwest end of Sierra Santa Rosa, about 2,600 feet above sea level. It is in a region of northwest-trending mountain ranges separated by broad desert valleys.
Lost Canyon
February 2009
The name makes you wonder, “Just how remote is this place?” It’s in the Tahoe National Forest and the Canada Hill Mining District, an area of steeply cut canyons that averages about 5,000 feet in elevation.
The name makes you wonder, “Just how remote is this place?” It’s in the Tahoe National Forest and the Canada Hill Mining District, an area of steeply cut canyons that averages about 5,000 feet in elevation.
Fighting and Winning Without a Lawyer
August 2013
This article may not be as interesting as someone describing a big nugget find in Australia...but right now the biggest obstacle to mining is our government.
This article may not be as interesting as someone describing a big nugget find in Australia...but right now the biggest obstacle to mining is our government.
In Pursuit of Gold and Silver in the Sierra Madres—Purchasing Land in Mexico
March 2007
My wife and I spent three years laying the groundwork to build a processing mill for gold, silver, lead and some zinc in the Sierra Madre Mountains of Northern Mexico, in the state of Sonora. In this installment, I describe how we purchased the land to build the new mill.
My wife and I spent three years laying the groundwork to build a processing mill for gold, silver, lead and some zinc in the Sierra Madre Mountains of Northern Mexico, in the state of Sonora. In this installment, I describe how we purchased the land to build the new mill.
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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
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