Geochemical and petrographic Studies of Iron-ore deposits of Timsah Formation at East Aswan area, Egypt | ||||
| Al-Azhar Bulletin of Science | ||||
| Volume 2024, Issue 1, January 2024 | ||||
| DOI: 10.58675/2636-3305.1678 | ||||
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| Authors | ||||
| Amr Nappout1; Atef M. Hosny1; Ibrahim Hashem Zidan2 | ||||
| 1Geology Department, Faculty of Science, Al-Azhar University, Assiut Branch, Egypt | ||||
| 2Nuclear Materials Authority, Cairo, Egypt | ||||
| Abstract | ||||
| The present study concerns the Upper Cretaceous oolitic ironstones of the Timsah Formation located in East Aswan, southern Nile Valley, Egypt. The Timsah Formation contains oolitic iron ore with ~ 3–5 m thick beds. The formation is exposed along the wadi level and the lower part of the scarp face in the study area. It was subject to petrography, mineralogy, and geochemical studies to understand the genetic and characteristic features of iron-ore deposits of the Timsah Formation. The iron ooids of Aswan ironstone are suggested to be formed in sedimentary basins from land-derived iron-rich constituents. Oolitic hematitic sandstone makes up the majority of the Timsah ironstones. The hue of the oolitic ironstones might be violet, yellowish, brownish, reddish, or brownish. According to the petrographic study, the ironstones are made up of pelloids, ooids, and sometimes pisoids (pisoliths) in various forms between matrix and ferruginous cement, which is made up of clay minerals and quartz with fine to medium grains. According to X-ray diffraction (XRD) examination, the primary constituents of oolitic ironstone are quartz, chamosite, goethite, and hematite. | ||||
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