A Modern Gold Rush In Sudan
December 2009 by Chris RalphA couple of months ago, folks on the US and Aussie online gold forums started noticing that GP4500 detectors (Minelab’s top of the line gold unit) were selling used for prices significantly more than they cost new!
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The favorable geology of the northeastern and central parts of the Seven Troughs Range are the parts most interesting to prospectors. They are underlain by a thick sequence of Tertiary volcanic rocks, mostly rhyolites and andesites.
Once across, I panned a couple of spots around some old grass roots and the fine gold was amazingly heavy. Every pan I ran after that had lots of color.
Excerpts from California Mining Journal, our original title, published 50 years ago this month.
It is important to note that discrimination is a type of electronic filtering. The signal is analyzed, and depending on the discrimination setting, identified as either a target to be dug or a target to be ignored.
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