All Articles
No Gravel, No Gold
November 2009 by Tom Leftwich
It was the spring and I was planning on dredging the east bank of the Mokelumne River near the whitewater falls of Slaughter House Gulch just out of Pine Grove, California. The water was high and remained that way into July.
Large Gold Deposit Types
It is not necessary to have a PhD in geology, but you need to know the basics, so that’s what I am going to try to dig into here—the understandable basics of these gigantic gold deposits.
The Lost Silver Triangle of the Sierra Madre—Part II
Newspaper stories in the spring of 1887 credited Lieutenant Henry O. Flipper with discovering both the long-lost Guaynopa and Tayopa mines. Flipper was in Mexico City in late April and May and a reporter interviewed him.
How to Beat the Heat--and The Bedrock
The pit was a classic one—exposed shale bedrock with all the material being washed out one end of the pit. Within a few minutes I had a nice mellow signal that was in open ground.
Melman on Gold & Silver
Another area of growing international concern for business and industry is the recent astonishing proliferation of new government regulations and laws. Despite the presumably good intentions behind these measures it is now becoming apparent that they are imposing true costs to our economic society. The sheer variety of these laws and regulations is mind-boggling.
Goldfield—Princess of the Mojave
The sunbeams are winding their way through the snowclouds. I am rising out of Death Valley to engage in some reverie, a journey into times past. Prospect pits, phantoms from boom times’ extinct, appear on the side of the road. Soon, I enter the Bullfrog Mining District.
Mining Pegmatite Deposits
With successively lower temperatures as the water mixture cools, new sets of minerals are formed and many of those stable at a higher degree of heat became subject to alteration as the temperature progressively moved lower.
Letter to the Editor
In the August 2000 issue of the Journal, the story of the "Quartszite Area" was most informative and accurate.
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