Authors : Ibrahim Ouedraogo; Olisa Olusegun.G.; Saga Sawadogo

Volume/Issue : Volume 10 - 2025, Issue 5 - May

Google Scholar : https://tinyurl.com/mr29t8d4

DOI : https://doi.org/10.38124/ijisrt/25may1828

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Abstract : Gold mineralization in Gnimi-Yaboghan, southwestern Burkina Faso, was investigated to enhance understanding of its geological context and exploration potential. Geological mapping at a 1:50,000 scale revealed amphibolite, schist, granitoid, and quartz veins. Mineralogical and geochemical analyses (XRF, ICP-MS) and fire assay techniques identified quartz, feldspar, mica, and accessory minerals. The granitoids were classified as calc-alkaline, peraluminous, and S-type, indicating formation in a subduction zone. A ternary diagram suggested a hydrothermal submarine origin for the quartz veins. Lithophile elements (K, Rb, Ba, Sr) showed a genetic link between quartz veins and metasedimentary rocks, with metamorphic fluids likely responsible for gold deposition. Gold content was very low in granitoids (<0.002 ppm) but reached up to 9.9 ppm in quartz veins, confirming them as the primary gold-bearing structures. This study supports previous findings that most gold in Burkina Faso is hosted in quartz veins and highlights the significance of hydrothermal processes in mineralization.

Keywords : Geochemical Prospecting, Gold Mineralisation, Hydrothermal Fluid, Structures, Burkina-Faso.

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