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.
Additional articles that might interest you...
The Vore Mine
July 2008
The price of gold has certainly raised some eyebrows and has prompted some new prospectors onto the scene. They are faced with the same problem that we old timers have—where to find the gold.
The price of gold has certainly raised some eyebrows and has prompted some new prospectors onto the scene. They are faced with the same problem that we old timers have—where to find the gold.
The Forgotten Specimen—Part II
July 2009
The walk back to the car and subsequent search for Frieda took a lot longer than I would have liked. I had wandered much further than I thought.
The walk back to the car and subsequent search for Frieda took a lot longer than I would have liked. I had wandered much further than I thought.
Mining Companies Competing for Labor
November 2005
Brian Barclay makes a 275-mile commute across Colorado every week to work near this dusty little town, drawn by a natural gas boom that has added trucks, cranes and hundreds of people to the rocky landscape.
Brian Barclay makes a 275-mile commute across Colorado every week to work near this dusty little town, drawn by a natural gas boom that has added trucks, cranes and hundreds of people to the rocky landscape.
California and US Gold Panning Championships
October 2010
The objective was to pan down all the material from the three-gallon bucket, extract the gold into a small vial, and then signal completion. Every lost flake added a five-minute penalty.
The objective was to pan down all the material from the three-gallon bucket, extract the gold into a small vial, and then signal completion. Every lost flake added a five-minute penalty.
Prospecting for Hardrock Gold - Part II
April 2010
I finally managed to return to this exploration effort. There was still snow on the ground on the north side of the mountain where I started, but I knew the south side was likely melted and gold fever bit too hard to stay inside any longer.
I finally managed to return to this exploration effort. There was still snow on the ground on the north side of the mountain where I started, but I knew the south side was likely melted and gold fever bit too hard to stay inside any longer.
Miners Find Encouraging Prospects Near Livengood
November 2008
New exploration on land that was scoured for gold years ago near Livengood indicates the property could be developed into a mine on a scale similar to the Fort Knox Mine, according to a Colorado-based company.
New exploration on land that was scoured for gold years ago near Livengood indicates the property could be developed into a mine on a scale similar to the Fort Knox Mine, according to a Colorado-based company.
Central Coast Ranges
May 2003
A series of coastal ranges, separated by narrow valleys, characterize coastal California south of Monterey. The mountains rise to 5,800 feet in elevation, with annual rainfall varying from 12 to 64 inches, depending on elevation and exposure.
A series of coastal ranges, separated by narrow valleys, characterize coastal California south of Monterey. The mountains rise to 5,800 feet in elevation, with annual rainfall varying from 12 to 64 inches, depending on elevation and exposure.
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The Bawl Mill
• Our Readers Say
• The Assay of High Iron Gold Ores
• The Patch
• History of Mining—Bradshaw Mountains, AZ (Part I)
• Picks & Pans—The Green Rock, Rattlesnakes, Good Gold and Ruth's Mine
• The Oretron
• 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
• V.P. Contender Addresses Mining Show
