History & Geology
Eastern Arizona: Gold and Base Metal Deposits—Part I
February 2011 by W. Dan Hausel
Arizona is well-known for its copper-gold porphyries and massive base metal-gold sulfide deposits such that primary gold deposits in the state are often overshadowed.
Additional articles that might interest you...
A Journey Into the Silver Peak Range
June 2013
The Gold Rush in California called hundreds of thousands of souls to leave their homes to journey to the the far reaches of the West. At first the rich goldfields of the Sierra Nevada beckoned to these adventurous pioneers.
The Gold Rush in California called hundreds of thousands of souls to leave their homes to journey to the the far reaches of the West. At first the rich goldfields of the Sierra Nevada beckoned to these adventurous pioneers.
Placer Mining At Chititu Creek, Alaska
March 2015
There is reason to believe these stream valleys are still rich with gold, silver and copper.
There is reason to believe these stream valleys are still rich with gold, silver and copper.
Electrum: Gold and Silver Together
January 2016
...if you are out prospecting and find something that looks very much like a nugget but has an odd greenish-gray cast to it, don’t be too quick to simply toss it aside as junk.
...if you are out prospecting and find something that looks very much like a nugget but has an odd greenish-gray cast to it, don’t be too quick to simply toss it aside as junk.
Gold Deposition and Gradients of Placer Streams—Part I
June 2012
When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...
When placer miners from the gold rush era began experimenting with the slope of their sluices, they must have pondered the ideal slope for trapping gold in a creek bed too. Logic suggests the same is true for streams...
The Giant King Mine
July 2014
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
Alaska's Cripple Creek Mining District
November 2011
If developed with metal detecting in mind, this virgin ground could be a bonanza for nugget hunting.
If developed with metal detecting in mind, this virgin ground could be a bonanza for nugget hunting.
Over the Divide: John A. Miscovich
October 2014
Mining “giant” John A. Miscovich died August 22, 2014, at the age of 96. He was the well-known inventor of the “Intelligiant” water cannon.
Mining “giant” John A. Miscovich died August 22, 2014, at the age of 96. He was the well-known inventor of the “Intelligiant” water cannon.
Subscription Required:
The Bawl Mill
• Our Readers Say
• The Basics of Crushing and Milling Operations
• Ask The Experts—What minerals are magnetic? Can rare earth magnets capture platinum?
• Ask The Experts—Jet nozzle or suction nozzle? Which is best for my highbanker?
• Ask The Experts—Precious metals in water?
• Rediscovering Placerville, California
• Over The Divide—Daryl J. Nelson
• Legislative and Regulatory Update
• Cyanide-Free Gold Separation
• Mining Stock Quotes & Mineral and Metal Prices
• Melman on Gold & Silver
