El Heiz Ferruginous Sandstone Occur

SRC.REF: GSE LABORATORIESABDEL AZIM U.U., 1962, CONCENTRATION OF LOW GRADE IRON ORE FROM EL HEIZ AREA. BAHARIYA OASIS, EGYPT V.A.R. M.S. THESIS P. 128 FAC. SCI. UNIV. OF EGYPT.HATHOUT M.Z. AND ABDEL AZIM, Y.Y. 1961, HIGH FRADE IRON ORES FROM FERRUGINOUS SANDSTONE , IRON AND STEEL CONG. OF CAIRO, 24P., CAIRORESEARCH INSTITUTE PRAHO, 1959, IRON ORE BENEFICATION OF BAHARIYA OASIS 1959, EL HEIZ 11/59 CH. S.S.R.DARDIR, A.A., 1975, EVALUATION OF EL HEIZ DEPOSIT, INT REP. GEOL. SURV. CAIRO.