September 2005 by Leonard Melman“When Irish Eyes Are Smiling” is the title to one of the world’s most famous songs, but it might also take on new meaning if a junior mining company succeeds in bringing its plans to fruition.
I find it difficult to recall a period when the world has encountered so many simultaneous threats which “should” have driven gold and silver higher, and yet the precious metals markets—so far—have failed to rally to any significant extent.
Excerpted from the U.S. Geological Survey's 1998 Annual Review by Earle B. Amey, Gold Commodity Specialist.
In the first part of this article, we took a look at the special geology required to form coarse gold. In the second part, we looked at field examples of coarse gold occurrences and the geology of residual placers.
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At least 6 million ounces of gold have been produced in Oregon since 1859. Since there are no accurate records of production prior to 1904, it is obvious that total gold production was considerably higher than that which has been recorded.
Most placer equipment is really made with gold in the 30 and larger mesh sizes in mind, though if carefully used can often get reasonable recovery down to the 50 mesh size.
The Oatman/San Francisco Mining District’s historic gold production of 2.2 million ounces of gold since the 1880s makes this area Arizona’s greatest primary gold producing district.
The Bawl Mill • From the Editor • Lode Gold in Honduras • Explosives Camp Lets Students Explore Booming Career Path • Tales of California Gold Discoveries 1st in a Series—Yankee Jim's • Picks & Pans: Perseverance Pays Off • The Best Copper Town Anywhere • Drywashing and Detecting for Eluvial Placer Gold Research is the Key to Success—Part I • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices