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May-June 2014

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Minerals from the Miarolitic Pegmatites in the Stove Mountain Area, Colorado Springs, Colorado

The miarolitic pegmatites in the Stove Mountain area of Colorado have provided numerous attractive specimens of quartz, microcline, albite, and fluorite, as well as rarer accessory minerals. Opaque brown zircons with curved faces, elongated black riebeckite crystals, and bronze-colored astrophyllite blades are some of the other minerals from this area. Unlike the better known pegmatites within the Pikes Peak Batholith, this area is also notable for its suite of rare species, such as bastnäsite-(Ce), fluocerite-(Ce), genthelvite, and columbite-group minerals. These and other rare minerals have been found as lustrous, sharp crystals.

Gary Zito graduated from the University of Colorado with degrees in geology and chemistry and currently works in the Electron Microscope Laboratory at the Colorado School of Mines. He has been an active collector of Colorado minerals for more than thirty years.

Dr. Sarah L. Hanson is a professor in the geology department at Adrian College. Much of her research is focused on the mineralogy and geochemistry of pegmatites.

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