| Reference | {Deposit:: MONTANA INDUSTRIAL MINERALS, MINOBRAS, 1975, P. 13.}{Deposit:: USBM RI 6611, P. 76.}{Deposit:: LUFT, S., 1958, NORTHERN PACIFIC RAILWAY CO. PROPERTIES AND}{Deposit:: INDUSTRIAL DEVELOPMENT DEPT. PHOSPHATE REPORT, P. 100.}{Deposit:: SWANSON, R.W., 1970, MIN. RES. IN PERMIAN ROCKS OF SW}{Deposit:: MONTANA: USGS PROF. PAPER 313-E.}{Deposit:: KLEPPER, M.R., 1953, STRAT. SECS. OF THE PHOSPHORIA FM}{Deposit:: IN MONTANA, 1948: USGS CIRC. 260, P. 9.} |