All Articles
Synclinal Oil
April 2005 by Edgar B. Heylmun, PhD
Most oilfields are found in anticlinal faults, or stratigraphic traps. Oil floats on water, so that it will rise to the highest point possible, above the water. If the porous or fractured sandstone or limestone that contains the oil is overlain by impervious shale, the oil can no longer rise. If the porous bed is arched upward...Additional articles that might interest you...
Mining Expedition at Eagle Rock—Part I
May 2009
We spent the winter and spring months obtaining all of the prospecting and camping gear that would be needed to sustain the five of us for 14 days on the river.
We spent the winter and spring months obtaining all of the prospecting and camping gear that would be needed to sustain the five of us for 14 days on the river.
Mining Stock Quotes and Mineral & Metal Prices
December 2002
Mining Investment—Or Fraud?
June 2002
The rapid fall of the stock market created a situation in which investors not only pulled back from traditional equities, assuming dot coms are traditional investments, but many recent arrivals in the world’s...
The rapid fall of the stock market created a situation in which investors not only pulled back from traditional equities, assuming dot coms are traditional investments, but many recent arrivals in the world’s...
From Spanish Mine to Modern-Day Exploration: The Historic Gold-Silver Camp of Palmarejo
August 2007
Palmarejo Silver & Gold Corp., based in Longueuil, Quebec, is a gold-silver exploration company reexploring a former Spanish silver district in far southwestern Chihuahua.
Palmarejo Silver & Gold Corp., based in Longueuil, Quebec, is a gold-silver exploration company reexploring a former Spanish silver district in far southwestern Chihuahua.
A Gold Detector Sitting in a Closet Only Finds Dust—More Detector Tips
June 2003
The diverse minerals, salts, and moisture, plus any halo effect, and old-timer trash, especially decomposing iron artifacts, are often found in any dry placer gold field and can really mask the “penetration powers” of a detector.
The diverse minerals, salts, and moisture, plus any halo effect, and old-timer trash, especially decomposing iron artifacts, are often found in any dry placer gold field and can really mask the “penetration powers” of a detector.
Michigan Proposal Would Restrict Mining Operations
November 2009
A group called Michigan Save Our Water Committee is seeking a Michigan ballot measure that would prohibit some types of mining and restrict others.
A group called Michigan Save Our Water Committee is seeking a Michigan ballot measure that would prohibit some types of mining and restrict others.
Detectors Versus Pans
November 2010
Mike scored the best with a total of one-half ounce of gold nuggets. Tom, Brian and Greg each had pieces in the one and a half pennyweight range. The rest of us had small gold and nothing like these three.
Mike scored the best with a total of one-half ounce of gold nuggets. Tom, Brian and Greg each had pieces in the one and a half pennyweight range. The rest of us had small gold and nothing like these three.
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The Bawl Mill
• Our Readers Say
• Progress Report on Washington State Small-Scale Regulations
• Pediments
• Bill to Allow Mining of Coeur d'Alene Basin
• Dredging Below the Homestake
• Looking Back
• Picks & Pans: The Glory Hole
• Enthusiastic Crowds at PDAC
• Fraser Institute Survey Results Rank Best (and Worst) Mining Locales
• Small-Scale Prospecting & Mining (A Little History)
• Higher Zinc Price Creates Opportunity
• Government Appeals Miner Injury Case to Supreme Court
• Mining Stock Quotes and Mineral & Metal Prices
• Melman on Gold & Silver
