The Archean greenstone belt called Bélinga Group was highlighted in NE-Gabon around 1960. It consists of many petrographic types such as itabirites (BIFs), ultrabasites, and amphibolites. Recent geophysical studies revealed the presence of BIFs and associated rocks at Ovan, which were linked to the Bélinga Group according to similar magnetic and some petrographic characteristics. Unfortunately, data on itabirites in respect with petrography, mineralogy and geochemistry are rare. This note aims at contributing to petrography, mineralogy and elemental mapping of Ovan itabirites on the one hand, and giving strong proofs that they belong to the Bélinga Group on the other.
