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Wall-Rock Alteration
April 2004 by Edgar B. Heylmun, PhD
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.Retired Geologist Warned Public of Pending EPA Disaster
Retired geologist Dave Taylor of Farmington, New Mexico, predicted the disaster in a letter published by the Silverton Standard a week before it occurred.
Legislative and Regulatory Update
• New California suction gold dredging regulations released—and they are just as bad as we predicted
• Dredgers file US Supreme Court response in Oregon case
• Washington State pushes same suction gold dredging narrative
• Pentagon reverses decision on rare earth projects
PGMs in California
The occurrence of platinum-group metals (PGMs) is rather widespread in California in placer deposits, but they are not of commercial interest as things now stand.
Legislative and Regulatory Update
• Changes to influential House committees
• Supreme Court may review ESA
• Suit filed to block Kensington
• Exploration incentive proposed in Wyoming
• Montana bill LC1058
Legislative and Regulatory Update
• Additional access restrictions proposed in Arizona
• Oregon senators introduce bill to place state rivers and streams off-limits
Ask The Experts—What Should I Do Next With This Quartz Vein?
I don’t know what to do next. Should I get an assay of the quartz? Can you recommend someone? Should I somehow crush the rock & search for a gold vein? Am I just wasting my time?
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