Author(s)

Simon Pierre Djroh^1*, Gnamba Emmanuel Franck Gouedji², Ehui Beh Jean Constantin Aka¹, Boko Célestin Sombo¹, Christian Picard³, Marc-Antoine Audet⁴, Bouaké Bakayoko⁴

¹Applied Geophysics Research Team, Laboratory of Geology, Mineral and Energy Resources (LGRME), Faculty of Earth Science and Mineral Resources, Félix Houphouet Boigny University, Abidjan, Côte d’Ivoire.
²Geology and Mining Sciences, University of Man, Man, Côte d’Ivoire.
³University of Franche-Comté (UMR 6249), 16 Route de Gray, Besançon, France.
⁴Sama Nickel-CI Sarl, 2 Plateaux Vallons, Abidjan, Côte d’Ivoire.

Mafic and ultramafic intrusions observed in the Archean formations of the Sipilou region exhibit occurrences of polymetallic sulphide. Mapping, petrographic and geochemical studies have defined magnetic facies associated with the various geological units. The results of this work reveal that cupronickel sulphides, olivines and pyroxenes as well as spinels are related to ultrabasic formations where strong magnetic facies prevail. Iron sulphides and magnetite are linked to quartzo-feldspathic and jotunite-enderbite formations, which are characterised by moderate magnetic facies. The latter are thought to be derived from anatexite remobilisation within Archean granulites, which have weak magnetic facies.

Magnetic Facies, Mapping, Petrography, Geochemistry, Sulphides, Côte d’Ivoire

Djroh, S. , Gouedji, G. , Aka, E. , Sombo, B. , Picard, C. , Audet, M. and Bakayoko, B. (2022) Magnetic Facies and Polymetallic Sulphides Deposit in the Mafic and Ultramafic Intrusions of Samapleu (Western Côte d’Ivoire). Open Journal of Geology, 12, 811-827. doi: 10.4236/ojg.2022.1210039.