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Gold in Gossan
March 2003 by Edgar B. Heylmun, PhD
Gossan is defined as being an iron-bearing capping over a sulfide deposit. It is formed by the oxidation and leaching of sulfide minerals, leaving hydrated iron oxides such as limonite and goethite, along with manganese oxides.
Additional articles that might interest you...
Metal-Mineral Identification Utilizing a Detector
November 2005
Seldom is a metal detector used for ore sampling today. Nevertheless, this procedure still works as all BFO and VLF detectors have a non-conductive mineral zone and a conductive metal zone with a neutral null zone between them.
Seldom is a metal detector used for ore sampling today. Nevertheless, this procedure still works as all BFO and VLF detectors have a non-conductive mineral zone and a conductive metal zone with a neutral null zone between them.
Osisko Exploration: Redeveloping the Historic Malartic Mining Camp
August 2006
Quebec is known throughout Canada as “La Belle Provence”—The Beautiful Province. While eastern Quebec is better-known with major cities Montreal and Quebec City, the western portion is indeed a land of lakes, forests, streams and...
Quebec is known throughout Canada as “La Belle Provence”—The Beautiful Province. While eastern Quebec is better-known with major cities Montreal and Quebec City, the western portion is indeed a land of lakes, forests, streams and...
Our Readers Say
March 2002
• “They are not planning to close more areas...”
• “The mountain states were never regarded as lynx habitat...”
• “They are not planning to close more areas...”
• “The mountain states were never regarded as lynx habitat...”
Miners Come Out On Top in SREP v. USFS
December 2005
It’s been over 2½ years since the Siskiyou Regional Education Project (SREP) filed suit in US District Court against the Siskiyou National Forest (SNF).
It’s been over 2½ years since the Siskiyou Regional Education Project (SREP) filed suit in US District Court against the Siskiyou National Forest (SNF).
PGMs in the United States
August 1999
Until just recently, platinum-group metals (PGMs), especially palladium, had been holding their own on the market. But, Russia has now resumed shipments and it has brought prices down.
Until just recently, platinum-group metals (PGMs), especially palladium, had been holding their own on the market. But, Russia has now resumed shipments and it has brought prices down.
The Upper Susitna Goldfields
January 2007
The upper Susitna Goldfields, sometimes known as the Valdez Creek Mining District, are located 150 miles northeast of Anchorage off the Denali Highway in the Alaska Range. Though a small mining district, it was the “jewelry box” of the...
The upper Susitna Goldfields, sometimes known as the Valdez Creek Mining District, are located 150 miles northeast of Anchorage off the Denali Highway in the Alaska Range. Though a small mining district, it was the “jewelry box” of the...
Environment-Friendly Dredging
February 2001
The modern gold prospector is a person of great moral fiber who loves the freedoms of this country and understands that with rights come responsibilities.
The modern gold prospector is a person of great moral fiber who loves the freedoms of this country and understands that with rights come responsibilities.
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The Bawl Mill
• The Steeple Rock District, New Mexico
• The Hunt for Diamonds, Nunavut, Canada
• Famous Yuba River Dredge Sinks
• Gold in Maine?
• Mud Creek Placer Mine Adventure
• Junior Miners and Investors Gather in Canada
• Picks & Pans: Dredging at Douglas Creek, Wyoming
• Company Notes
• Gold Prospecting on the East Fork River, Alaska (Part III—Conclusion)
• National Mining Hall of Fall and Museum Calls for Poetry
• Mining Stock Quotes and Mineral & Metal Prices
• Melman on Gold & Silver
• Looking Back
