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Desert Bonanza
July 1999 by Dr. Ralph E. Pray
If you think all the vein gold near the surface has been dug up—think again! A weekend prospector recently came into the lab with a shoe-box full of samples that were from ten to fifty percent native crystalline gold on dirty white quartz.
Sniping for Drought Gold
There are not a lot of tools needed to get out and take advantage of the situation. Other than my wetsuit, I typically travel light with a gold pan, maybe a pry bar and a few crevice cleaning tools.
Cyanide-Free Gold Separation
Some ores—mostly those with a high free gold content—are very amenable to gravity concentration. Well oxidized ores containing coarse gold are usually best for non-cyanide processes. Ores with significant sulfide content may require the...
Gold in North Dakota
North Dakota, 70,704 square miles in area, is situated on the Great Plains, in the geographic center of the North American continent. It is bounded on the north by Canada.
Tucson Mountain Chaos
The Tucson Mountains are immediately west of Tucson, in southern Arizona, and include residential areas of the city. The highest peak, Wasson (Amole) Peak, reaches 4,687 feet. It is part of the great Basin-Range physiographic province, characterized by fault-block mountain ranges separated by broad desert valleys.
Gold, Quartz & Chalcedony—Part II
The specific gravity of chalcedony is 2.58 to 2.64. This is slightly lower than coarsely crystalline quartz because of slight porosity in chalcedony. Being so light, it will easily wash out of a gold pan.
Understanding and Prospecting Benches
The most obvious benches are usually near the valley floor, but they can be thousands of feet above the valley floor. Since benches were made by streams, they can contain placer deposits.
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The Bawl Mill
• Gold Hunters Hit the Web in Fight with Missile Range
• Religious Broadcaster in Liberia Mining Venture
• Kazak Government Collects Gold from Residents
• Recreational Gold Panning on the South Yuba River
• Groups Wonder Meaning of Call for More Wilderness
• Mining Claim Maintenance Fee Due
• Gold Near Boulder, Colorado
• Company Notes
• The Carissa Gold Mine, South Pass, Wyoming—A Sleeper?
• Tantalum
• Building the American Dream
• Picks & Pans: A Pay Streak in Slate
• Elizabethtown: Uncovering a Buried California Mining Community
• California Diamonds
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Silver Demand Driving Mine Production Up—Mexico Remains Number One Producer
• Looking Back
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