All Articles
Gold in China
July 2004 by Edgar B. Heylmun, PhD
China is an enormous country, behind only Russia, the United States (incl. Alaska), and Canada in size. It has a teeming population of 1.3 billion, far ahead of any other nation. Most of the population is jammed into the eastern half of China, with the western half being only sparsely inhabited. There are 5 western provinces...Additional articles that might interest you...
Drilling for Ore
August 2014
In the simplest sense, drills can be divided by their mode of action—percussion, rotary or a mixture of the two.
In the simplest sense, drills can be divided by their mode of action—percussion, rotary or a mixture of the two.
Diamond Prospecting in Indiana
January 2015
My first personal experience with placer diamonds was on a gold prospecting trip in Indiana about 8 years ago, when a fellow prospector was cleaning his gold concentrates.
My first personal experience with placer diamonds was on a gold prospecting trip in Indiana about 8 years ago, when a fellow prospector was cleaning his gold concentrates.
Miners Making the Rules and Regulations?
October 2015
How would you like it if you could make the actual rules and regulations governing your own business? A dream, right? Well, the existing Federal Mining Law gives a claimholder this ability in the context of organized Mining Districts.
How would you like it if you could make the actual rules and regulations governing your own business? A dream, right? Well, the existing Federal Mining Law gives a claimholder this ability in the context of organized Mining Districts.
Legislative and Regulatory Update
September 2003
• Small miners can join bonding pool in Alaska
• Comments needed for diesel particulate matter proposed rule
• Administration asks Supreme Court to review wilderness ruling
• Bush selects Utah Governor as next EPA chief
• Small miners can join bonding pool in Alaska
• Comments needed for diesel particulate matter proposed rule
• Administration asks Supreme Court to review wilderness ruling
• Bush selects Utah Governor as next EPA chief
Mining Stock Quotes and Mineral & Metal Prices
October 2003
Electrum: Gold and Silver Together
January 2016
...if you are out prospecting and find something that looks very much like a nugget but has an odd greenish-gray cast to it, don’t be too quick to simply toss it aside as junk.
...if you are out prospecting and find something that looks very much like a nugget but has an odd greenish-gray cast to it, don’t be too quick to simply toss it aside as junk.
Gold Deposits in Skarn
July 2003
Skarn consists of coarse-grained calcium, magnesium, iron, and aluminum silicates formed by hydrothermal solutions, which replace limestone or dolomite near the contact with an igneous intrusion. The contact metamorphism is usually caused by an intrusion such as quartz monzonite, granodiorite, or similar rock type, which may or may not be mineralized.
Skarn consists of coarse-grained calcium, magnesium, iron, and aluminum silicates formed by hydrothermal solutions, which replace limestone or dolomite near the contact with an igneous intrusion. The contact metamorphism is usually caused by an intrusion such as quartz monzonite, granodiorite, or similar rock type, which may or may not be mineralized.
Subscription Required:
The Bawl Mill
• Mining Claim Fees Are Going Up
• Our Readers Say
• Buell Park Pipe, Arizona
• Mines and Money
• Understanding Hard Rock Mining: Terms and Methods—Part II
• Two Nevada Mines Look to Supply Own Power
• Paleontonlogical Resources Preservation Act
• Picks & Pans: Mexican "Edventure"
• Over the Divide
• Flat-Fault Gold in Sonora, Mexico
• Looking Back
• The Fern Mine
• Map Offers Look at Butte's Mining History
• 2004 National Mining Hall of Fame Inductees
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
