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Understanding Geologic Deposit Models
May 2008 by Chris Ralph
Geologists have long noted the similarities of certain types of mineral deposits all across the globe. Similar minerals, similar country rocks, and similar grades of mineralization may occur in several different parts of the world.The Bawl Mill
• The Forest Service worker who cried “wolf”
• Out of commission
BLM Cancels 10-Million-Acre Sage Grouse Mineral Withdrawal
The very way it was done at the time didn’t give one much confidence in the objectivity and honesty of the BLM study.
The Bawl Mill
• Taxed to the max...
• What were they thinking?
• Maybe they just misplaced it...
• Not so environmentally friendly after all...
Prospecting for Silver With a Geiger Counter
Light-colored volcanic tuff or tuffaceous sandstone often contains small amounts of uranium, enough to be detected with a sensitive radiation detector. Sometimes, the mass effect of the radiation is substantial.
The First Prospectors
Who were the earliest prospectors in the Western Hemisphere? Is there any way to tell?
The Lost Silver Triangle of the Sierra Madre—Part II
Newspaper stories in the spring of 1887 credited Lieutenant Henry O. Flipper with discovering both the long-lost Guaynopa and Tayopa mines. Flipper was in Mexico City in late April and May and a reporter interviewed him.
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The Bawl Mill
• Ask the Experts—Why doesn't the 1872 Mining Law apply to all 50 states?
• Ask The Experts—Where do I find information about getting paid for raw gold?
• The Lost Silver Triangle of the Sierra Madre—Part II
• Prospecting for Diamonds
• Avino’s Durango Project
• Success With A Detector
• Horsetail Gold
• The Makorakoza of Zimbabwe—Centuries of Prospecting in Gold-Hosting Dolerites
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
