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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.The Birthday Nugget Patch
Down around 10 or 12 inches I hit a large cobble that appeared to be one type of hot rock for this area. I thought bad things about the new technology until I checked the rock.
Melman on Gold & Silver
The ultimate resolution of this apparent contradiction between fundamental news and market performance could provide us with important future clues for gold and silver.
2016 Gold Prospecting and Mining Summit
We’ve been fielding quite a few questions lately from subscribers and manufacturers wanting to know if we are going to host another Gold Prospecting and Mining Summit.
Give That Club Claim A Chance
My first trip to the claim was the tip-off that there might be larger gold to be found. I brought my puffer drywasher and my dad to a local prospecting club outing that was held at the claim.Understanding Rock Formations: Petrology for Prospectors
There are times when being able to recognize a type of rock can make you a much more successful prospector.
Legislative and Regulatory Update
• USFS cost recovery
• Measure 37 affirmed
• Court declines to hear Canyon Resources claim
• Kempthorne nominated to head Interior
Detecting Clay Seams
Because the old timers were so good at locating the better paying deposits—most of them along clay seams in this particular area—it makes good sense to try and locate these clay lines at old mining sites.
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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
