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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.The Bawl Mill
• Nearly half their income goes to the government...
• Prison life has its priviledges
Are There Any Good Prospects Left?
This type of thinking will get you discouraged pretty fast, and soon all of your mining equipment will be found gathering dust in your garage.
Silver Bonanza in the Sierra Madre: The Glorious Past of Batopilas—Conclusion
The first Madero Revolution broke out in Mexico on November 20, 1910. On December 27, a revolutionary party exacted supplies, arms, and mules from the company until January 7, 1911, when the 7th Cavalry Regiment of the federal government destroyed three and a half tons of their dynamite near Baquiachi. On September 8, 1912, Batopilas was captured, a local garrison driven out, and the company forced to pay 10,000 pesos. Federal forces retook the town September 19.
MMAC & PLP Update
Many miners have failed to exercise their rights by using the power of their Mining Districts and laws that are already on the books, such as 43 CFR 9712.1, which states…
Oregon Governor Asks For Mineral Withdrawal
Conservation groups hope to meld the three wilderness areas and surrounding parts of southwestern Oregon into one big wilderness covering 1 million acres—a move Kulongoski has endorsed.
The History of Gold Mining in Sierra County
There may be some truth to some of the fantastic claims. The Ruby Drift Mine near Forest City is where 159 nuggets were taken out between 1937 and 1942—a total of about 1,000 ounces with an estimated value of $1.5 million when gold was...
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