All Articles
Enrichment of Gold Veins
November 2000 by Edgar B. Heylmun, PhD
Most of the world's great gold mines are in secondary (supergene) enrichments in veins and stockwork, brought about by physical and chemical processes.
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Treasures for Sale
March 2000
A Wolfeboro company will sell portions of one of the most talked about treasures in American history.
A Wolfeboro company will sell portions of one of the most talked about treasures in American history.
Our Readers Say:
October 2001
• Regarding 3809 and property rights
• Regarding the editorial, "A True Endangered Species" (09/01 ICMJ)
• We should all use the correct terms
• Regarding 3809 and property rights
• Regarding the editorial, "A True Endangered Species" (09/01 ICMJ)
• We should all use the correct terms
Our Readers Say
May 1999
"Thanks to your help, the word got out..."
"Thanks to your help, the word got out..."
MMAC Update
April 2017
We spent our evening at some informal get-togethers at two private residences in the DC area, which provided the opportunity to talk with staff members from Congress, other agencies, and a few consultants working on public land issues. We found common ground with many of them, and found a strong ally in a former Congressman turned consultant who agreed that Mining Districts provide the smartest legal route...
We spent our evening at some informal get-togethers at two private residences in the DC area, which provided the opportunity to talk with staff members from Congress, other agencies, and a few consultants working on public land issues. We found common ground with many of them, and found a strong ally in a former Congressman turned consultant who agreed that Mining Districts provide the smartest legal route...
Nevada's Silver City Gold District—Part I
March 2016
The name Silver City is quite ironic as it doesn’t really fit the area’s metal production. The area encompassing the Silver City district is a great, stand-alone gold district, where the production value of gold has been much more than that of silver. Since the initial discovery of gold-bearing veins in the mid-1850s, the area has been a center of continuous small and large-scale gold production.
The name Silver City is quite ironic as it doesn’t really fit the area’s metal production. The area encompassing the Silver City district is a great, stand-alone gold district, where the production value of gold has been much more than that of silver. Since the initial discovery of gold-bearing veins in the mid-1850s, the area has been a center of continuous small and large-scale gold production.New Study on the Formation of Nuggets—Part I
December 2007
Geologists have long realized that the vast majority of gold in typical quartz veins is in the tiny, dust-size range, a lot smaller than the gold nuggets found by placer miners. This is common worldwide in many, many gold districts.
Geologists have long realized that the vast majority of gold in typical quartz veins is in the tiny, dust-size range, a lot smaller than the gold nuggets found by placer miners. This is common worldwide in many, many gold districts.
Underground Mining: Getting the Ore Out
February 2017
Choosing the right method to move your ore and waste is all about making the right choices. Sometimes more than one method may be used during the life of a mine as an operation expands and grows.
Choosing the right method to move your ore and waste is all about making the right choices. Sometimes more than one method may be used during the life of a mine as an operation expands and grows.
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The Bawl Mill
• Our Readers Say
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• History of Mining—Bradshaw Mountains, AZ (Part I)
• Picks & Pans—The Green Rock, Rattlesnakes, Good Gold and Ruth's Mine
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• Silver Hill, North Carolina
• Residual, Lateritic and Gossan "Soils" as Potential Nuggetshooting Sites
• Hardrock in Downieville
• Looking Back
• Company Notes
• Gold in Northern Baja California
• California State Gold Panning Championship Results
• Melman on Gold & Silver
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