| Reference | {Deposit:: GROUT, F.F., 1949-50, THE TITANIFEROUS MAGNETITES OF MINNESOTA: ST. PAUL, OFFICE OF THE COMMISSIONER OF THE IRON RANGE RESOURCES AND REHABILITITATION, 117 P.}{Deposit:: NATHAN, H.D., 1969, THE GEOLOGY OF A PORTION OF THE DULUTY COMPLEX, COOK COUNTY: PH.D. THESIS, UNIVERSITY OF MINNESOTA, 198P.}{Deposit:: FANTEL, R.J., ET AL, 1986, TITANIUM MINERALS AVAILABILITY - MARKET ECONOMY COUNTRIES, US BUREAU OF MINES INFORMATION CIRCULAR 9061, 48P.}{Deposit:: PETERSON, E.C., 1966, TITANIUM RESOURCES OF THE UNITED STATES. US BUREAU OF INFORMATION CIRCULAR 8290, 65P.}{Deposit:: FORCE, R.R. AND LYND, L.E., 1984, TITANIUM MINERAL RESOURCES OF THE UNITED STATES DEFINITIONS AND DOCUMENTATION: CONTRIBUTIONS TO THE GEOLOGY OF MINERAL DEPOSITS, US GEOLGOICAL SURVEY BULLETIN 1558B} |