| Reference | {Deposit:: WALL STREET HOURNAL, 1976, BUTTES SAYS STUDIES ON COLORADO PROSPECT INDICATE MAJOR DEPOSIT OF TITANIUM ORE: WALL STREET JOURNAL, V. 187, NO. 37 (24 FEBRUARY), P. 6.}{Deposit:: LARSEN, E.S., 1942, ALKALIC ROCKS OF IRON HILL, GUNNISON COUNTY, COLORADO: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 197 A, 164 P.}{Deposit:: THOMPSON, J.V., 1982, ORAL COMMUNICATION.}{Deposit:: FANTEL, R.J., ET AL 1986, TITANIUM MINERALS AVAILABILITY - MARKET ECONOMY COUNTRIES, US BUREAU OF MINES INFORMATION CIRCULAR 9061, 48 P.} |