| Reference | {Deposit:: POPOFF,C.C.,1965, AN EVALUATION OF THE WESTERN PHOSPHATE}{Deposit:: INDUSTRY AND I* RESOURCES,PT.2, MONTANA, USBM RI 6611.}{Deposit:: LUFT,S.,1958, NORTHERN PACIFIC RAILWAY CO. PROPERTIES AND}{Deposit:: INDUSTRIAL DEVELOPMENT DEPT. PHOSPHATE REPORT.}{Deposit:: CONDIT, D.D., 1928, PHOSPHATE ROCK IN THE THREE FORKS-}{Deposit:: YELLOWSTONE PARK REGION, MT: USGS BULL. 795-G, P 184.}{Deposit:: MINOBRAS, 1975, MONTANA INDUSTRIAL MINERALS, P. 32.} |