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...
Melman on Gold & Silver
March 2020
One of the most rewarding features of technical analysis is when clear signals are fulfilled by the market and also when those signals conform to the bulk of fundamental information.
Legislative and Regulatory Update
January 2004
• Small miners address Washington State Senators
• Recent IBLA decisions
• SEIS available for comment
• BLM to redo CBM study
• California forgets why it's known as "The Golden State"
• Small miners address Washington State Senators
• Recent IBLA decisions
• SEIS available for comment
• BLM to redo CBM study
• California forgets why it's known as "The Golden State"
Dredging The Outside Bend
July 2011
This stringer was where it was not supposed to be, and it contained nuggets that were not supposed to be there.
This stringer was where it was not supposed to be, and it contained nuggets that were not supposed to be there.
Looking Back
February 2000
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
The Bawl Mill
March 2005
• Our tax dollars at work, or not...
• Crafty robbers make another withdrawl
• Nebraska Governor earns our praise for saving taxpayer money
• State cries "wolf!"
• Let's end on an up note
• Our tax dollars at work, or not...
• Crafty robbers make another withdrawl
• Nebraska Governor earns our praise for saving taxpayer money
• State cries "wolf!"
• Let's end on an up note
The Birimian Greenstone Belts of West Africa
June 2013
A few years ago I had a tremendous opportunity to visit Australia and hunt for gold there. The geology of the gold deposits there was somewhat different from what I was used to here in the US. I learned a lot about greenstone belt gold deposits while prospecting them in person, and it was an amazing trip.
A few years ago I had a tremendous opportunity to visit Australia and hunt for gold there. The geology of the gold deposits there was somewhat different from what I was used to here in the US. I learned a lot about greenstone belt gold deposits while prospecting them in person, and it was an amazing trip.
The Bawl Mill
December 2018
- Chinese buyers turn their noses up at new car smell
- Sheriff’s office more than ready for emergencies...in the bathroom
- Saving money by not paying the bill
Subscription Required:
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
