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On October 17th, 2025, in Reno, J. Robert Clark, Ph.D., Chairman & CEO, Geologist/Geochemist, presented to the Geological Society of Nevada [GSN] an interesting study of selective trace element extraction geochemistry. The title of his presentation is “Modeling a Porphyry System and a Silver Vein System Underlying Surficial Gold Shows in the Great Basin Using Selective Extraction Trace Element Patterns in Soils.” See below for the PowerPoint presentation.
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