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Gifts of Gold for University of Zimbabwe
September 2009 by Ann Kritzinger
The design of the makorokoza’s handmade wooden pans has not changed over the centuries. Until Rege introduced it to them they had seen nothing like a spiral wheel concentrator.
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Mining Stock Quotes and Mineral & Metal Prices
January 2004
Proper Assaying of Placer Samples
November 2012
The whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.
The whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.
Tips for Detecting Old Hydraulic Pits
October 2012
There are several counties around Shasta County that offer very good gold detecting. Many of these locations are old hydraulic pits. While detecting these old pits over the years I have come up with some ideas on how to go about hunting them.
There are several counties around Shasta County that offer very good gold detecting. Many of these locations are old hydraulic pits. While detecting these old pits over the years I have come up with some ideas on how to go about hunting them.
Identifying the Noble Metals Simple Tests That Work
May 2006
Using a porcelain evaporating dish, place concentrates or head ore, equal to a tablespoon, in 60cc of aqua regia. Boil almost to dry, then add 10cc HCl (hydrochloric or muratic acid) and heat for a few minutes, and then add 30cc of water and bring to boil. Let cool while the solids are being allowed to settle. Using a pipette...
Using a porcelain evaporating dish, place concentrates or head ore, equal to a tablespoon, in 60cc of aqua regia. Boil almost to dry, then add 10cc HCl (hydrochloric or muratic acid) and heat for a few minutes, and then add 30cc of water and bring to boil. Let cool while the solids are being allowed to settle. Using a pipette...
Legislative and Regulatory Update
March 2012
• California suction dredging regulations
• Draft Coho recovery plan for Southern Oregon, Northern California
• Sage-grouse
• California suction dredging regulations
• Draft Coho recovery plan for Southern Oregon, Northern California
• Sage-grouse
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The Bawl Mill
• Legislative and Regulatory Update
• Drive Under Way to Restore the Rights of Suction Dredgers
• Abbey Confirmed As BLM Director
• Flood Stage—The Key to Reading a River
• Noted Geologist Murdered in Kenya
• South Yuba River Recreational Area
• Rio Employees Face Trade Secrets, Bribery Charges
• Pocket Mining Potential in Nevada's East Humboldt Range
• Company Finds Gold in Wyoming’s Rattlesnake Hills
• The Economic Impact of Suction Dredging in California
• Bucket Line Dredges
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
