Mining Pegmatite Deposits
July 2018 by Chris Ralph
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.
Many miners know that lead is very commonly associated with silver values, but the truth is that it is also associated with gold values in many locations as well.
Plumas has been historically rich in gold because of its favorable geology. The Melones Fault trends north-south through the county and many rich gold-bearing districts lie along its course.
The design of metal detectors well-suited for prospecting is an interesting process and not necessarily an easy one to achieve. It is a combination that blends the desires of what prospectors would like, the requirements of sales people and dealers, with the science and physics of what the electronics can achieve.
Because the old timers were so good at locating the better paying deposits—most of them along clay seams in this particular area—it makes good sense to try and locate these clay lines at old mining sites.
There may be lots of smaller gold I cannot hear with a detector, but it looks just fine in my pan once it is out of the crevice.
As I write this, I am still on a rush from taking my 9-year-old son, Jeffrey, prospecting for the first time this past weekend. It’s not that he hasn’t been along on numerous outings before: this is the first time that just the two of us went out for a day of drywashing and detecting under the desert sun.
It is better in a gem and mineral mining operation that the driller, blaster and mucker be the same person in order to be able to predict placement of the desired mineral enriched pockets.
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