Author(s)

Luc Adissin Glodji^1*, Renaud Saïzonou¹, Fatchéssin Bruno Adjo¹, Adiss Kamal Issifou Fatiou¹, Soulémana Yessoufou¹, Basile Adjo Kanon²

¹Département des Sciences de la Terre, Faculté des Sciences et Techniques, Université d’Abomey-Calavi, Cotonou, Bénin.
²Direction Générale des Mines, Cotonou, Bénin.

Occurrences of chromium mineral exist in Bénin within the external nappes of the Pan-African Dahomeyides belt. These chromite deposits are podiform types and hosted in the serpentinite. Blackish color, the chromite appears under microscope in transmitted light, as cracked phenocrystals with tangles of the serpentinite venules. Chemical analyses using X-ray fluorescence spectrometer showed the chromite ore consists of about 38% Cr₂O₃ and total (Cr₂O₃ + Al₂O₃) is 60%. This chromiferous mineralisation resulted from the magmatic cumulates formation by fractional crystallization of an ultramafic magma.

Geology, Geochemistry, Chromite, Serpentinite, Buem, Benin

Glodji, L. , Saïzonou, R. , Adjo, F. , Fatiou, A. , Yessoufou, S. and Kanon, B. (2019) Geology and Geochemistry of the Chromiferous Mineralization in the External Zone of the Pan-African Dahomeyides Belt, Northwestern Benin (Gulf of Guinea, West Africa). International Journal of Geosciences, 10, 1068-1080. doi: 10.4236/ijg.2019.1012061.