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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.Mining Stock Quotes and Mineral & Metal Prices
Ophir—Possibly the Best Kept Secret in Alaska!
...I decided to excavate the semi-frozen high-bank that was resting on a soft shale bedrock footing. Within three feet, I encountered an intrusive!
Court Says Emergency Rule in California Unjustified
Superior Court Judge Karen L. Dixon granted the temporary restraining order on July 3, 2013.
Dredging Backwards?
Before I tell you what dredging backwards is, I’ll tell you why my team and I decided to give this very unconventional dredging method a try.
SB 838 and the Future of Mining in Oregon
The verbage is SB 838 is vague and ambiguous to say the least. As a result, there is quite a bit of misinformation floating around the rumor mills.
Mining Stock Quotes, Mineral & Metal Prices
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