Studying on mineralogical and petrological characteristics of Gara Djebilet oolitic iron ore, Tindouf (Algeria)
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Mining, Metallurgy and Materials Engineering Department National Higher School of Technology and Engineering of Annaba, 23005; Annaba.
Mines Department, Laboratory Mineral Resources Valorization and Environment, Badji Mokhtar University, Annaba, Algeria
Department of Transport Engineering, Université frères Mentouri, Constantine1, Algeria
Department of Mining Engineering, Higher Education Complex of Zarand, Shahid Bahonar University of Kerman, Kerman 7761156391, Iran
Mineral Industries Research Center, Shahid Bahonar University of Kerman, 76169133 Kerman, Iran
Department of Geoscience and Petroleum, Faculty of Engineering, Norwegian University of Science and Technology, Trondheim 7031, Norway
Mineral Services Ltd, Ty Maelgwyn, 1 A Gower Road, Cathays, Cardiff CF244PA, United Kingdom
Publication date: 2024-01-09
Corresponding author
Nassima Chebel   

Mining, Metallurgy and Materials Engineering Department National Higher School of Technology and Engineering of Annaba, 23005; Annaba.
Physicochem. Probl. Miner. Process. 2023;59(5):178382
Demand for iron ore worldwide has been steadily increasing which leads to the extraction of iron ore deposits with more complex mineralogies and higher levels of silicon and phosphorus impurities. This is the case in Algeria with the iron ore deposit of Gara Djebilet, Tindouf; where it has recently been exploited to ensure the sufficiency of iron ore required to produce iron and steel products. This deposit has remained unexploited for several decades due to inadequate knowledge of its mineralogy, treatment, and economic assessments. This study aims to find out the microstructure, chemical composition, and mineralogical distribution of valuable minerals and impurities, to understand the efficient processing methods for this specific iron ore. The characterization of representative ironstone samples taken from the studied area was carried out using optical microscopy, X-ray fluorescence spectrometer (XRF), petrographic microscope, X-ray diffractometer (XRD), and scanning electron microscope (SEM) coupled with energy dispersive X-ray spectroscopy (EDS). The results of the mineralogical analyses confirmed that it is an oolitic fine-grained ore consisting of gangue minerals principally composed of quartz, apatite, and iron-rich concentric cored structures. Chemical analyses of the ore indicated that it contains 56.58 wt% Fe with 7.98 wt% SiO2, 7.09 wt% Al2O3, and minor amounts of P2O5, CaO, MgO, and TiO2 compounds. The phosphorus associated was present in both ooids and groundmass, indicating that the ore has a complex texture with very rich and diverse mineralogy. For that, two conceptual scenarios were potentially proposed for processing the studied iron ore, while further detailed automated mineralogical information was required to make sure about the processing units from a practical perspective.
Special Issue of PPMP Journal in honour of Professor Juan Yianatos
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