The Phosphoria, Park City, and Shedhorn formations in the western phosphate field

Possible Involvement of Permian Phosphoria Formation Oil as a Source of REE and Other Metals Associated with Complex U-V Mineralization in the Northern Bighorn Basin?

“…The U.S. Geological Survey (USGS) studied the Permian Phosphoria Formation and related rock units in the Western U.S. Phosphate Field in southeast Idaho, southwest Wyoming, and southwest Montana ( Figure 10) throughout much of the twentieth century [20][21][22][64][65][66][67][68][69][70][71][72][73][74][75][76][77]. The deposit has been a major phosphate resource for agricultural fertilizer [70].…”

“…For this study, data from several studies carried out by the USGS and the Wyoming State Geological Survey of the Phosphoria Formation in ID, WY and MT [64][65][66][67][73][74][75][76][77] was examined. Figure 10 shows the locations of samples sites and the approximate location of this study; map shows approximate location of the Permian age rock.…”

“…Some maximum values include: 857 ppm As, 22 ppm Ag, 3000 ppm Ba, 3000 ppm Cd, 150 ppm Co, 30,800 ppm Cr, 1.6 ppm Hg, 16,000 ppm Mn, 280 ppm Mo, >1000 ppm Ni, 668 ppm Pb, 1200 ppm Se, 130 ppm Tl, 328 ppm U, 35,840 ppm V, 1600 ppm Y, 15,000 ppm Zn and 2158 REE ppm [20,21,[64][65][66][67][68][69][70][71][72][73][74][75]. Analyses of the Mn nodule used in Figure 11 above from a U.S. Geological Survey study near Dillon, MT had low total REE but high compositions of other metals: 400 ppm As, 1200 ppm Cd, 2200 ppm Co, 70 ppm Mo, 13,000 ppm Ni, 1 ppm Te, 1000 ppm Tl, 700 ppm V, and 25,000 ppm Zn [66].…”

Uranium Hydrogeochemical and Stream Sediment Reconnaissance in southwestern Montana

“…The following description of the Phosphoria formation in southwestern Montana is summarized from the works of Swanson (1970), Heinrich (1958), andMcKelvey et al (1959).…”

New aspects on the formation of hydrocarbon source rocks

“…up to 9 per cent) which are considered to be major hydrocarbon source beds for numerous oil fields (MAuo-HAN 1975;CLAYPOOL et al 1978;DEMAISON & MOORE 1980, 1198. The Phosphoria Formation has been studied in detail because of its rich resources of phosphorite (McKELVEY et al 1959). The carbonaceous shales, that are intertongued with sandstones, carbonate, and terrigeneous mudstone, were deposited as sapropels composed of abundant hydrogen-rich kerogen in a matrix of clay to silt-size quartz, carbonate-fluorapatite, dolomite, feldspar, and other silicate minerals (GuLBRANDSEN 1960, 86-87).…”