Reference | {Deposit:: WILLIAMS, J.S., 1939 , PHOSPHATE IN UTAH: UTAH AGRIC EXP STA BULL 290 , P. 21}{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 - 76} |