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On October 17th, 2025, in Reno, J. Robert Clark, Ph.D., Chairman & CEO, Geologist/Geochemist, will present 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.”

For a direct link to the meeting information go to www.gsnv.org

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Modeling a Porphyry Cu & Ag Veins with Enzyme Leach- Abstract

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Engage the services of one of the oldest, most experienced, and reliable assay laboratories. Serving the mining industry across the Americas for decades, from exploration through development, to mine expansion.

Industry Leader for over 135 years

B R E A K I N G

B R E A K I N G B R E A K I N G

Professional Analytical Services

Standard Assays

Custom Trace Analyses

Enzyme Leach ®

Engage the services of one of the oldest, most experienced, and reliable assay laboratories. Serving the mining industry across the Americas for decades, from exploration through development, to mine expansion.

B R E A K I N G