History & Geology
Copper Deposits of Alaska
February 2014 by Steve Herschbach
Only the famous Kennecott copper mine was able to continue operating through the Depression owing to the exceptional richness of its ore.
Additional articles that might interest you...
Prospecting for Copper Ores—Part II
July 2012
Copper is a critically important metal that we need to run our modern electronic society, and the long term outlook for this metal is for a steady increase in price.
Copper is a critically important metal that we need to run our modern electronic society, and the long term outlook for this metal is for a steady increase in price.
Nevada's Lithium Boom
March 2017
When prospecting for lithium, after confirming for macro attributes through research and field work, including examination of surface geology, the main tool is an accurate lithium assay.
When prospecting for lithium, after confirming for macro attributes through research and field work, including examination of surface geology, the main tool is an accurate lithium assay.
Ancient River Channels of Trinity County
June 2013
Trinity County is located in the far northwest corner of California and stirs up many different memories for those who have been there.
Trinity County is located in the far northwest corner of California and stirs up many different memories for those who have been there.
The Struggle to Reopen Alaska's Largest Gold Mine
November 2012
The historical AJ mine, located east of Juneau, Alaska, was considered the largest gold mine in the state at one time. Joe Juneau and Richard Harris struck gold there in 1880, and it has been more recently known as a tourist destination.
The historical AJ mine, located east of Juneau, Alaska, was considered the largest gold mine in the state at one time. Joe Juneau and Richard Harris struck gold there in 1880, and it has been more recently known as a tourist destination.
Gold in Quartz
February 2016
Because quartz and gold may be deposited together across a considerable range of temperatures, not all quartz veins are the same, and there are several different types of gold-quartz deposits.
Because quartz and gold may be deposited together across a considerable range of temperatures, not all quartz veins are the same, and there are several different types of gold-quartz deposits.
Glaciers and Placer Gold Deposits
November 2016
It also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.
It also happens sometimes that glaciers will bury valuable placer deposits. This occurs when the glacier goes over the top of an existing placer deposit.
WSGS Releases New Geologic Maps
December 2011
The Wyoming State Geological Survey announced ten new geologic maps have been completed and are now available.
The Wyoming State Geological Survey announced ten new geologic maps have been completed and are now available.
Subscription Required:
The Bawl Mill
• Legislative and Regulatory Update
• Ask the Experts
• Ask the Experts
• Ask the Experts
• Ask the Experts
• Our Readers Say
• The Perfect Summer
• Eolian Gold Deposits
• Divide and Conquer—Detecting Old Placer Grounds with Friends
• Reserves and Resources Explained
• Critical Metals: Lithium
• Coprolite—A Prospector's Tale
• Comstock Mining Gets Approval
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
SB 838 and the Future of Mining in Oregon
• New Mining Regulations in Maine
