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Estimating Gold Values in Placer Gravels
May 2005 by Staff
The single most important question to be answered when evaluating a placer deposit is: “How much is it worth?” Accurate sampling of placer gravels is essential to obtain a reasonable estimate of the total gold values contained in the deposit.
Record $11 Million Fine for California Mine
State regulators imposed a record $11 million fine on the operators of a gold mine in the Sierra foothills east of Sacramento.
The Bawl Mill
- Bio-mass is a bio-miss…
- Russia exploiting “useful idiots of unwitting environmental groups…”
- California has the best of the worst…
Melman on Gold & Silver
Two potentially important Canadian projects, which could have produced revenues in the billions and jobs in the tens of thousands, have now been officially abandoned and the reasons offered by both relate to the economic impossibility of successfully negotiating all the regulatory obstacles that have been presented.
Wall-Rock Alteration
Wall-rock (country rock) alteration is found in all hard-rock mining districts and has been caused by hydrothermal solutions in the past history of the region. The zones of alteration have a bearing on where one might drill for ore bodies. The weekend prospector does not have the tools nor knowledge to block out ore deposits, but he can narrow down his search dramatically by understanding the zones of wall-rock alteration that he sees.
Mine, Baby, Mine!
In March 2012, the Obama administration filed a World Trade Organization complaint against China. Now this is the election season, and taking potshots at China is an easy and natural thing for just about any politician to do. It’s almost as easy as offering support for motherhood and apple pie because virtually no one is going to oppose you. But this complaint was about mining, and so I thought it worthwhile...
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The Bawl Mill
• Our Readers Say
• Lode Gold in Nicaragua
• Miners: Plan Ahead for Next Year's Taxes
• California's Original Sixteen to One Mine
• Montana Multiple Use Association Backs Miner
• Picks & Pans: Detecting Micro-Nuggets
• Diamond Search Underway in Alaska and Minnesota
• Mining Outfits Eye 50-Year Supply of Iron Ore
• Goldfield—Princess of the Mojave
• Couple Creates Jewelry of the Iron Range
• Melman on Gold & Silver
• Looking Back
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