Thom Calandra: Pioneer Geologist Departs; Colombia Update

NAPA, California – Pioneer Nevada & Colombia geologist Raul Madrid died suddenly earlier this month. He was 66.

Dr. Madrid and I met several times over the years, as recently as this past spring. He lived in Napa, California, not far from where I live. Dr. Madrid launched many companies during his career. He was a former vice president of exploration for Nevada’s Victoria Gold. He and another colleague, Ralph Roberts, worked along Nevada’s prolific Carlin Trend for many years. Dr. Roberts was considered the father of the Carlin Trend.

“The exploration community lost a dedicated geologist,” said Dr. Paul Zweng, a fellow geologist and one of Raul Madrid’s students and co-workers. “He hired me to work with Ralph Roberts in Nevada.”

Raul Madrid earned his doctorate at Stanford University under a National Science Foundation Fellowship in geology. He is credited with pioneering work in Nevada, in Colombia and in Spain. See: Related article.

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