All Articles
Gold in Jasperoid
February 2000 by Edgar B. Heylmun, PhD
Jasperoid is a jasper-like siliceous rock, in which chalcedony or cryptocrystalline quartz has replaced limestone, dolomite, or shale. It forms the gangue of many important ore bodies. It is stained by iron and manganese oxides into shades of...
The Art of Underwater Nugget Shooting
There is a surprising amount of detectable gold under the water’s surface. The right tools make it much easier to find, and with a little patience and practice you can take advantage of this underappreciated bonanza.
Ask The Experts - How do I best recover gold in pyrite?
Mining Returns to Historic Comstock
Mining has returned to Nevada’s historic Comstock more than 150 years after the discovery of one of the world’s richest silver veins touched off a frenzy that drew thousands of people west. But unlike the hard rock miners in the 1800s, the modern day operation involves huge trucks...
Prospecting With Color
Perhaps no one factor has caused more confusion in the search for ore than the attempt to use color as a guide to prospecting. Yet, there is a reason for every color seen in rocks, so it deserves to be noted.
Eastern Arizona: Gold and Base Metal Deposits—Part I
Arizona is well-known for its copper-gold porphyries and massive base metal-gold sulfide deposits such that primary gold deposits in the state are often overshadowed.
Legislative and Regulatory Update
• Environmentalists are missing a golden opportunity
• Special-use authorization not needed
Company Notes
• Pure Gold Minerals Inc.
• International Freegold Mineral Development Inc.
• Hope Bay Gold Corp. Inc.
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The Bawl Mill
• Clinton Declares Three More National Monuments
• McCain Derides Clinton Forest Policy
• Foreigners Lure Mining Partners
• Pacific Island Gov'ts Focus on Undersea Mining
• Options Narrowed for Managing Chugach National Forest
• Company Notes
• Diamond Fever
• Underground Geologic Mapping
• New Quarry Regulations in West Virginia
• Ash Fork Calm After Explosives Theft
• Picks & Pans: Mining in Ghana
• Little Rocky Mountains, Montana
• Collector Reaches New Lows to Find Bottles
• Chinese Camp, California and the Tong War of 1856
• Millie's Tailings
• Visionaries, Scoundrels, and Gamblers
• Executive Defends Special Mill Site Exemption
• Chasing the Ghosts of Forty-Niners
• Washoe County Balks at Black Rock Desert Plan
• State's Only Gold Mine Processes Last Precious Ore
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
