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Author Topic: Clay-Based Overburden - - A Placer Minerís Nightmare  (Read 3758 times)

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Offline GPEX admin

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Clay-Based Overburden - - A Placer Minerís Nightmare
« on: January 26, 2008, 12:21:19 PM »
Or is it?   What actually lies amidst that which most feels would be barren?  Anyone working this type of deposit?
Somebody said that it couldn't be done
But he with a chuckle replied
That maybe it couldn't but he wouldn't be one
Who'd say so until he had tried.

Offline faaus

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Re: Clay-Based Overburden - - A Placer Minerís Nightmare
« Reply #1 on: January 26, 2008, 06:49:46 PM »
I got to work quite a bit of various clay layers this year, while hunting midwestern US glacial gold (that is the stuff that we than our northern brethren for.)

Some of the highly-mineralized, rusty hardpan was very productive, but that blue-gray stuff was a nightmare to dredge. My method was to slow way down and break it up, as best I could, before letting the sluice take it. I didn't see any gold IN it, but there was some in conjuntion with it.

The boulder clay that was created by the action of the glaciers is an indicator and a curse combined.

Heavy Pans,
faaus

Offline daemdaem

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Re: Clay-Based Overburden - - A Placer Minerís Nightmare
« Reply #2 on: March 24, 2008, 10:25:48 PM »
Yah hoo  wooo wooo  wonderfull stuff.  We have 35 claims near Mayo Yukon. Ours are very carefully chosen to avoid  trommeling, or mulling.   Sadly just over the ridge  a number of folks have found out what a nightmare clay boulders can turn into.  Barkerville  and Wells however
was a Yin/Yang  situation. Some of the best claims had preglacial gravels nicely held in place under a dense blue clay layer. allan