Beryllium deposits of the Mount Antero region, Chaffee County, Colorado: U.S. Geological Survey Trace Element...Beryllium deposits of the Mount Antero region, Chaffee County, Colorado: U.S. Geological Survey Bulletin 982-D...1974, Murataite, a new complex oxide from El Paso County, Colorado: American Mineralogist, v. 59, nos. 1-2...Gate Canyon and Ralston Creek areas, Jefferson County, Colorado: U.S. Geological Survey Circular 320...and Havens, R. G., 1962, Thalenite from Teller County, Colorado, Art. 121 in Geological Survey Research |