FGMS to hear about pegmatites

FALLBROOK – For over a century, San Diego County has been known for its mining activities and the spectacular minerals and gemstones extracted from the Pala, Mesa Grande and Ramona areas. These mineral treasures, beryls (aquamarine, morganite), tourmaline, spodumene (kunzite) and topaz, are some of the finest in the world and are incredibly rare. They formed in a type of igneous rock known as "pegmatites."

Geologist Jim Anderson will discuss the creation of these extraordinary minerals in his upcoming talk, "The Origin of Pegmatites." at Fallbrook Gem and Mineral Society Thursday, May 10, at 7 p.m., at the FGMS building, 123 W. Alvarado St.

Anderson obtained a Bachelor of Science in engineering geology from UCLA in 1975, further earning a M.S. in civil engineering and a M.B.A. in finance/operations research, both from UCLA. He worked as a geotechnical engineer in California, Texas and Alaska until 1985, shifting gears to pursue a career in finance. But once interested in rocks and minerals, always interested, as he traveled to nearly every state, always keeping his geology pick and field guide handy for adventures. Returning to California in 2013, he became interested in the tectonic evolution of western North America, zeroing in on San Diego County, hence his fascination with, "Where do pegmatites come from?"

The meeting is free and open to the public. Free parking is available on the street and in the lot across from the building. An opportunity drawing will be held with earth science related prizes and a special selection of minerals will be offered at 20 percent discount. Light refreshments will be served.