| Reference | {Deposit:: CHENEY, T.M. AND OTHERS, 1953 , STRATIG SECT OF THE PHOSPHORIA FM IN UTAH: USGS CIRC 306}{Deposit:: NACKOWSKI, M.P., FISHER, D., BEER, L., 1963 , MINERAL RESOURCES OF DUCHESNE CO.: BULL OF UNIV OF UTAH VOL 54 , NO. 20 OR UNIV OF UTAH ENG EXP STA BULL NO. 125 , P 70.} |