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...
Teenager Finds Large Nugget
September 2008
Fourteen-year-old Jacob Hopkins and his father Mike headed out like they do most weekends, to do a little fishing and hunt for gold.
Fourteen-year-old Jacob Hopkins and his father Mike headed out like they do most weekends, to do a little fishing and hunt for gold.
Kalgoorlie, Australia—Born of Gold
May 2007
In June 1893, a wiry Irish prospector by the name of Paddy Hannon was prospecting the harsh, dry country east of Coolgardie in Western Australia. It was country that could suck the moisture from a man’s body in days...
In June 1893, a wiry Irish prospector by the name of Paddy Hannon was prospecting the harsh, dry country east of Coolgardie in Western Australia. It was country that could suck the moisture from a man’s body in days...
The Basics of Exploration Leases and Contracts—Part I
February 2019
Let’s take a look at these important property aspects individually, because they all affect the value of a property and how much mining companies might or might not be interested acquiring it.
New Mining Regulations in Maine
February 2014
Renewed interest in mining of gold, silver, copper and other metals in Aroostook County's Bald Mountain triggered 2012 legislation requiring the overhaul of the state's two-decade-old mining regulations.
Renewed interest in mining of gold, silver, copper and other metals in Aroostook County's Bald Mountain triggered 2012 legislation requiring the overhaul of the state's two-decade-old mining regulations.
Legislative and Regulatory Update
June 2019
- House appropriations bills introduced
- Two Minnesota hardrock mining leases reinstated
- Equal Access to Justice Act
Mining Outfits Eye 50-Year Supply of Iron Ore
May 2005
Two companies are looking to mine the largest known iron ore deposit in the West—a 50-year supply at a rate of 1 million metric tons a year.
Two companies are looking to mine the largest known iron ore deposit in the West—a 50-year supply at a rate of 1 million metric tons a year.
Bullion River's French Gulch Gold Mine
December 2008
Bullion River’s high-grade gold mine at French Gulch, near Redding, California, may be in some ways the last of the Mohicans, or perhaps it is the first of the great revival, but for the near term it is probably destined to be a little bit of both.
Bullion River’s high-grade gold mine at French Gulch, near Redding, California, may be in some ways the last of the Mohicans, or perhaps it is the first of the great revival, but for the near term it is probably destined to be a little bit of both.
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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
