All Articles
Massive Sulfide Deposits in Oregon
October 2000 by Edgar B. Heylmun, PhD
This article deals with massive sulfide deposits in the Klamath Mountains of southwestern Oregon, but it applies to massive sulfides found in California as well.
Additional articles that might interest you...
Associated Gold Placers of the Comstock
November 2015
What many people don’t realize is that the Comstock Lode produced over 8,000,000 ounces of gold…
What many people don’t realize is that the Comstock Lode produced over 8,000,000 ounces of gold…
Exploration Drilling
June 1999
Selected excerpt from USDA Forest Service Technical Report:
Anatomy of a Mine from Prospect to Production
Selected excerpt from USDA Forest Service Technical Report:
Anatomy of a Mine from Prospect to Production
A New Method for Handling Stubborn Gravity Middlings
July 2016
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
The solution focused on the relative difference in malleability between gold and waste, rather than the difference in density exploited by gravity circuits.
Legislative and Regulatory Update
February 2010
• California dredging update
• On a related issue, SB 233
• EPA and greenhouse gases
• California dredging update
• On a related issue, SB 233
• EPA and greenhouse gases
Melman on Gold & Silver
June 2010
...we cannot help but wonder exactly how nation after nation, already massively in debt and presently burdened with monumental operating deficits, is going to come up with such largesse. We also wonder exactly how going ever-more deeply into debt is going to resolve a debt crisis.
...we cannot help but wonder exactly how nation after nation, already massively in debt and presently burdened with monumental operating deficits, is going to come up with such largesse. We also wonder exactly how going ever-more deeply into debt is going to resolve a debt crisis.
Clarence King, Geologist
May 2004
Clarence King was born in Rhode Island in 1842, the son of a businessman. His father died when he was 6, so he was raised by his mother. She wanted to have Clarence attend the very best schools, and even moved in order to have him in the best district. She gave him a magnifying glass on his 7th birthday, and this led to his discovery of fossil ferns in neighborhood rocks.
Clarence King was born in Rhode Island in 1842, the son of a businessman. His father died when he was 6, so he was raised by his mother. She wanted to have Clarence attend the very best schools, and even moved in order to have him in the best district. She gave him a magnifying glass on his 7th birthday, and this led to his discovery of fossil ferns in neighborhood rocks.
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The Bawl Mill
• A Word from the Editor
• Under the Guise of Environmental Protection—EPA Revealed
• The Centennial Lode and the Centennial Ridge District, Wyoming
• Company Notes
• Picks & Pans—In Search of Nome Creek Gold
• Recreational Dredging on the South Yuba River
• The Trapiches of Chile
• Tales of Liberty Gold
• Drywashing Alluvial Placers
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
