TITLE:
Geology and Geochemistry of the Chromiferous Mineralization in the External Zone of the Pan-African Dahomeyides Belt, Northwestern Benin (Gulf of Guinea, West Africa)
AUTHORS:
Luc Adissin Glodji, Renaud Saïzonou, Fatchéssin Bruno Adjo, Adiss Kamal Issifou Fatiou, Soulémana Yessoufou, Basile Adjo Kanon
KEYWORDS:
Geology, Geochemistry, Chromite, Serpentinite, Buem, Benin
JOURNAL NAME:
International Journal of Geosciences,
Vol.10 No.12,
December
9,
2019
ABSTRACT: 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.