San Hilario

BRITISH SULPHUR, 1980.CLARKE, GERRY, MEXICAN PHOSPHATE - A STRIVE FOR SELF-SUFFI-CIENCY, INDUSTRIAL MINERALS NO. 152, MAY 1980,PP.79-86.GONZALES, C. GARCIA, MEXICAN PROJECTS FOR PRODUCTION OFPHOSPHATE ROCK IN LOWER CALIFORNIA, 1980.RIVERA, JESUS OJEDA, GENERAL GEOLOGY AND PHOSPHATE DEPOSITSOF SOUTHERN BAJA CALIFORNIA, MEXICO, 1981.RIVERA, J.L., RESUMEN DE DATOS ESTRATIGRAFICOS Y ESTRUCTUR-ALES DE LA FORMACION MONTERREY QUE AFLORA EN EL AREA DESAN HILARIO, BAJA CALIFORNIA SUR (SUMMARY OF THESTRATIGRAPHIC AND STRUCTURAL DATA ON THE MONTERREYFORMATION WHICH OUTCROPS IN THE SAN HILARIO AREA, BAJACALIFORNIA (SUR), CONSEJO DE RECURSOS MINERALES(MINERAL RESOURCES COUNCIL), MEXICO, 1979.ROFOMEX, MOVES MEXICO TOWARD PHOSPHATE SELF-SUFFICENCY,E & MJ, JULY 1981.SALAS, G.P., SEDIMENTARY PHOSPHATE DEPOSIT IN BAJA CALIFOR-NIA, MEXICO, AIME 78-H-75, MARCH 1978.WORLD SURVEY OF PHOSPHATE DEPOSITS, 5TH ED. BRITISH SULPHURCORP. LTD. 1987, LONDON ENGLAND, P 58.