| Reference | {Deposit:: U.S. BUREAU OF MINES RI 6611, P. 106.}{Deposit:: LUFT, S., 1958, NORTHERN PACIFIC RAILWAY CO. PROPERTIES AND}{Deposit:: INDUSTRIAL DEVELOPMENT DEPT. PHOSPHATE REPORT, P. 105.}{Deposit:: SWANSON, R. W., 1970, MIN. RES. IN PERMIAN ROCKS OF SW}{Deposit:: MONTANA: USGS PROF. PAPER 313-E, P. 736.}{Deposit:: CONDIT, D. D., 1928, PHOSPHATE ROCK IN THE THREE FORKS-}{Deposit:: YELLOWSTONE PARK REGION, MT: USGS BULL. 795-G, P. 184.}{Deposit:: PETERSON, J. A., 1954, STRAT. SECS. OF THE PHOSPHORIA FM. IN}{Deposit:: MONTANA, 1951: USGS CIRC. 326, P. 25.}{Deposit:: MRB 113, P. 79.} |