All Articles
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.Legislative and Regulatory Update
Robert Sanregret—Attorney at Law
Western Mining Council
National Association of Mining Districts
Nevada's Silver City Gold District—Part I
The name Silver City is quite ironic as it doesn’t really fit the area’s metal production. The area encompassing the Silver City district is a great, stand-alone gold district, where the production value of gold has been much more than that of silver. Since the initial discovery of gold-bearing veins in the mid-1850s, the area has been a center of continuous small and large-scale gold production.Melman on Gold & Silver
...for the most part, visible price inflation has remained dormant for the most of that period of time. This state of affairs would appear to contradict both monetary history and typical cause and effect reasoning. Even the Fed has expressed some surprise and concern regarding the matter.
Bering Sea Gold—Part II
In last month’s issue we covered the initial discovery of gold, the subsequent gold rush that occurred around Nome, some of the geology of the area and past production. We’ll conclude the article in this issue with a further examination of the geology and deposit types, discuss the resources...
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Re: “Wasteful Government Projects”
Ask the Experts
Magnetometers explained
University of Nevada Offers Online Mineral Processing Class
The University of Nevada, Reno, and the Department of Mining Engineering at the Mackay School of Earth Sciences and Engineering, have teamed up to provide an online course in mineral processing.
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The Bawl Mill
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