Petrography, Geochemistry, and Lithium Exploration ‎Potential of Pan-African Granitoids from Pamsi Area ‎‎(Northern Cameroon Domain)‎

  • Authors

    • Amadou Diguim Kepnamou Department of Earth Science and Environment, Faculty of Sciences, University of Garoua, P.O Box 346, Garoua, ‎Cameroon
    • Naïmou Seguem Department of Life and Earth Science, University of Moundou, Moundou, Chad
    • Ganwa Alembert Alexandre Department of Mining Geology, School of Geology and Mining Engineering, University of Ngaoundere, P.O ‎Box 115, Meiganga, Cameroon and Department of Earth Science, Faculty of Sciences, University of Ngaoundere, P. O Box 454, Garoua, Cameroon
    • Noussi Fossi William Luther Department of Mining Geology, School of Geology and Mining Engineering, University of Ngaoundere, P.O ‎Box 115, Meiganga, Cameroon
    • Ntoumbé ‎ Mama Department of Mining Geology, School of Geology and Mining Engineering, University of Ngaoundere, P.O ‎Box 115, Meiganga, Cameroon
    • Haskandi Kalaza Josue Department of Mining Geology, School of Geology and Mining Engineering, University of Ngaoundere, P.O ‎Box 115, Meiganga, Cameroon
    https://doi.org/10.14419/p29jqd76

    Received date: February 19, 2026

    Accepted date: April 17, 2026

    Published date: April 21, 2026

  • Petrology; Geochemistry; Lithium Exploration; Pan-African Fold Belt; North Cameroon Domain; Pamsi

  • Abstract

    This study presents an integrated petrographic and geochemical investigation of granitoid and metamorphic ‎rocks from the Pamsi locality in the North Cameroon Domain of the Pan-African Fold Belt. Field observations, ‎microscopic analysis, and whole-rock geochemistry reveal five main lithological units: amphibole-biotite ‎granite, leucogranite, granodiorite, orthogneiss, and amphibolite. These rocks form a calc-alkaline suite ranging ‎from syeno-diorite to granite, classified as I-type, sub-alkaline, potassic to hyperpotassic, and predominantly ‎peraluminous to metaluminous. Geochemical signatures include strong LREE enrichment, negative Eu ‎anomalies in most samples, and multi-element patterns showing negative Ta-Nb, Sr, and Ti anomalies with ‎positive Th, Zr, and U anomalies, characteristic of differentiated magmas from mixed crustal-mantle sources. ‎Tectonic discrimination diagrams indicate volcanic arc to syn-collisional settings consistent with Pan-African ‎orogenesis. Pathfinder element analyses reveal preliminary indications of lithium exploration potential, with ‎samples N11 and N51 showing notable cesium enrichment (8.80–11.30 ppm) and elevated Cs/Rb ratios. Based ‎on established geochemical correlations—and pending direct lithium measurements—estimated lithium ‎contents of 200–800 ppm are proposed as preliminary targets for further investigation. These results highlight ‎the Pamsi area as a promising prospect for lithium mineralization associated with evolved pegmatitic systems, ‎warranting systematic follow-up studies‎.

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    Kepnamou, A. D., Seguem, N., Alexandre , G. A. ., Luther , N. F. W. ., Mama, N. ‎ ., & Josue , H. K. . (2026). Petrography, Geochemistry, and Lithium Exploration ‎Potential of Pan-African Granitoids from Pamsi Area ‎‎(Northern Cameroon Domain)‎. International Journal of Advanced Geosciences, 14(1), 43-54. https://doi.org/10.14419/p29jqd76