Indian Journal of Science and Technology
Year: 2022, Volume: 15, Issue: 46, Pages: 2570-2578
S O Mustapha1,2*, A S Olatunji1,3, F F Ajayi1,3, R A Isibor1,4
1Geosciences Programme, Pan African University Life and Earth Sciences Institute (PAULESI), University of Ibadan, Ibadan, Oyo, Nigeria
2Department of Geology and Mineral Sciences, Kwara State University, Malete, Kwara, Nigeria
3Department of Geology, University of Ibadan, Ibadan, Oyo, Nigeria
4Department of Geology, Ajayi Crowther University, Oyo, Nigeria
Email: [email protected]
Received Date:03 August 2022, Accepted Date:26 September 2022, Published Date:14 December 2022
Objective: Phosphate rocks found in some parts of Sokoto Sedimentary basins in Nigeria were studied to understand their mineralogy and geochemistry specifically to determine their abundance in Rare Earth Elements hosting minerals notably Apatite, Monazite and Xenotime as there is an increasing demand for these elements globally in the production of green technology. Methods: Field observations were carried out in places with reported phosphate occurrences and seven (7) representative phosphate samples were collected, crushed, pulverized, and analyzed using X-Ray Diffraction (XRD) analysis for their mineralogical composition while samples with significant fluorapatite concentrations were further analyzed with Lithium Borate fusion Inductively Coupled Plasma Mass Spectrometry (ICPMS) for their elemental composition. Findings: The phosphates typically occur as nodules intercalated with Shale occurring at depth of about 0.25 – 7m with a mineralogical composition including Fluoroapatite, Calcite, Smectite, Quartz, Kaolinite, Goethite, and Palygorskite. A high concentration of Fluorapatite was observed at Miyal’yako (79.28%) and Dillingo (36.60%) while interpretation of the relationship between P2O5 with other major oxides and trace elements revealed that the phosphates were primary type and typically formed in an oxidizing environment with fluctuating pH in the presence of calcite or gypsum. Novelty: The study pinpoints that, of the seven locations, only two showed high concentrations of fluoroapatites enough to suggest that they are areas of interest for further investigation in the search for REEs mineralization in Nigeria.
Keywords: Rare Earth Elements; Phosphate; Mineralisation; Fluorapatite; Sokoto
© 2022 Mustapha et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)
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