The Gems of Hiddenite, North Carolina: Mining History, Geology and Mineralogy

Mark Ivan Jacobson is a geologist-mineralogist specializing in the mining history, geology and mineralogy of pegmatites. He retired after 35 years with Chevron Corporation. Since 1984, he has been a consulting editor with Rocks and Minerals magazine. He lives in Denver, Colorado. Geologist Wade Edward Speer retired as a field expert in evaluating copper, gold, silver, diamond and emerald deposits in the U.S., Canada, South Africa, and South America. He lives in Marion, North Carolina.