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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...
A Trip to Morgan-Monroe State Forest of Indiana
October 2014
Some experienced panners with the vigor and longevity to spend a full day panning in the small creeks and ravines can possibly find as much as a gram or more on a good day.
Some experienced panners with the vigor and longevity to spend a full day panning in the small creeks and ravines can possibly find as much as a gram or more on a good day.
The Bawl Mill
April 2000
• A jury of your peers...
• Jesus a vegetarian?...
• He was no Santa Claus...
• A thief with a conscience...
• A jury of your peers...
• Jesus a vegetarian?...
• He was no Santa Claus...
• A thief with a conscience...
Melman on Gold & Silver
October 2005
It started out as a modest tropical depression near the Bahamas and was forecast to hit the east coast of Florida and then peter out over land. Then it was forecast to hit south Florida and strengthen moderately over the Gulf of Mexico before hitting the Florida Panhandle as perhaps a Category One hurricane.
It started out as a modest tropical depression near the Bahamas and was forecast to hit the east coast of Florida and then peter out over land. Then it was forecast to hit south Florida and strengthen moderately over the Gulf of Mexico before hitting the Florida Panhandle as perhaps a Category One hurricane.
Growing Up Gold
October 2015
If you’re going to successfully detect nuggets you must not only know a little about finding gold and detecting, but you also need to know your own limits, have a dash of luck and a lot of persistence.
If you’re going to successfully detect nuggets you must not only know a little about finding gold and detecting, but you also need to know your own limits, have a dash of luck and a lot of persistence.
Mining Expedition at Eagle Rock—Part I
May 2009
We spent the winter and spring months obtaining all of the prospecting and camping gear that would be needed to sustain the five of us for 14 days on the river.
We spent the winter and spring months obtaining all of the prospecting and camping gear that would be needed to sustain the five of us for 14 days on the river.
Melman on Gold & Silver
November 2008
...we are witnessing the onset of a major transformation of the underlying economic/political structure, perhaps headed toward government controls beyond any previous American experience.
...we are witnessing the onset of a major transformation of the underlying economic/political structure, perhaps headed toward government controls beyond any previous American experience.
Our Readers Say
November 2016
The coming election...
The coming election...
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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
