Reference | {Deposit:: DESBOROUGH, G.A., POOLE, F.G., GREEN, G.N., 1981, METALLIFEROUS OIL SHALES IN CENTRAL MONTANA AND NORTHEASTERN NEVADA: US GEOLOGICAL SURVEY OPEN-FILE REPORT 81-121, 14 P.}{Deposit:: DESBOROUGH, G.A., AND POOLE, F.G., 1983, METAL CONCENTRATIONS IN SOME MARINE BLACK SHALES OF THE U.S., IN SHANKS, W.C., ED., CAMERON VOL. ON UNCONVENTIONAL MINERAL DEPOSITS: SOC. MIN. ENG., AIME, N.Y., P. 99-110.}{Deposit:: ANON., 1981, MONTANA OIL SHALES: MINING JOURNAL, NOV., P. 393} |