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The Golden Triangle of Sonora, Mexico
May 2001 by Edgar B. Heylmun, PhD
The “Golden Triangle” dry placer district in Sonora, Mexico, lies some 80 to 100 miles south of the border. It is in desert terrain at elevations between 1,900 and 2,300 feet above sea level.
The Rochester Mining District of Nevada
Only the richest ores could be worked and shipped off for processing at a profit. As a result, early mining in the southern part of the Humboldt Range was short-lived. In the 1880s, placers were discovered in Spring Valley and American Valley on the east side of the range...
The Forgotten Specimen—Part II
The walk back to the car and subsequent search for Frieda took a lot longer than I would have liked. I had wandered much further than I thought.
Rock and Formations of the Mother Lode Gold Belt
The faulting, folding and shearing that occurred in the Mother Lode belt has created zones of structurally weak rocks or contacts between different types of rock, which has been favorable for the deposition of gold bearing ores.
Melman on Gold & Silver
To paraphrase the great Sir Winston Churchill, it would appear that, “Never have so many been so happy about so much!” Investors in stocks are happy; investors in gold are happy; investors in commodities, real estate, government bonds and even airline and utility stocks are happy. Productivity is growing; inflation appears to be diminishing and...
Roosevelt: From Boom Town to Mountain Lake
Roosevelt was a product of the Thunder Mountain boom, Idaho's last major gold rush.
Manslaughter Charges Dropped Against Sixteen to One Mine
Manslaughter charges against the Original Sixteen to One Mine, company president Mike Miller, and manager Jonathan Farrell, were dismissed by Judge Stanley Young Jr. in Downieville, California.
Pocket Mining Potential in Nevada's East Humboldt Range
Since the cycle of water flow is dominated by excessive and sudden “gulley washers” after downpours typical of desert country, there is a tendency to spread gold values out in the alluvial fans and not have placer gold concentrations more typical of big river deposits.
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The Bawl Mill
• Original Sixteen to One Goes to Court—Challenges MSHA Citations Part II
• Using Legal Subdivision
• Placer vs. Lode Gold
• Gold Tellurides: Tellurium, an Assay Impurity
• Court Hears Arguments Over Rights to Shipwreck
• Picks & Pans: How to Succeed in a Small Mine, A Case History: 1990-2000
• Charcoal Crucible Recipe
• Discovery of the Mountain Pass REO Deposit
• Romance of the Old Silver King
• Record-Breaking Alaskan Nugget for Sale
• Company Notes
• Nevada Gold Production Up Despite Lower Prices
• Gold in Guatemala
• Bush Taps Utah Resident for Labor Post
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Honda Pares Down Use of Precious Metals in Autos
