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March 2001 by Staff
• “...a great article that answers many of my questions...”• “I really appreciated reading the article about the Forty Mile operation...”
Legislative and Regulatory Update
• Latest assault on dredging in California
• Travel Management Plans
Enrichment of Mineral Deposits by Weathering—Part I
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.The Smell of Gold -- Part II
While mapping, I also found rock chips in the soil that were characteristic of the same wall rock alteration that occurs adjacent to the known lodes in the greenstone belt.
Revisiting The Old Mini Patch
Today, the greatest gold rushes occur due to technological advances capable of discovering gold where it once was extremely unlikely or difficult.
To Foam or Not to Foam
George was considering filling his dredge floats with closed-cell foam, ensuring that there would be no area available within each float for flooding.
Picks & Pans: How to Succeed in a Small Mine, A Case History: 1990-2000
The first requirement for a successful mine operation is a market for the product, metallic or nonmetallic. The second requirement is to deliver a quality salable product...
Throw-Away Gold: Back to Basics
Placer mining, whether for profit or recreational purposes, involves separation of free gold from the gold-bearing sands (gangue) of alluvial deposits by methods using specific gravity. The free gold can vary from 17 to 19.3 in specific gravity terms, depending on the alloy mix, which is usually silver, but can be copper, lead, sulfur, tellurium, antimony, or mercury.
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The Bawl Mill
• Gem Theft in Tucson
• BLM 3809 Final Rule Implications
• Winter Dredging
• Selecting a Gold Recovery System
• Placer Diamonds in Venezuela
• Picks & Pans: Leon Always Finds the Most Gold
• Company Notes
• The Swift Shore Mine 1862—Present
• Placer Gold in the Black Hills, South Dakota
• Platinum and Diamond Discoveries Shine New Light on Historic Alaska Gold-Mining District
• GATA Update
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
