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Azzibrouck, A.G. (1986) Sedimentology and Geochemistry of the Francevillian B (Lower Proterozoic): Metallogeny of the Manganese Deposits of Moanda, Gabon. Unp. PhD Thesis, University of Strasbourg.
https://theses.fr/1986STR13041

has been cited by the following article:

• TITLE: Lithostratigraphy of the Manganese Exploration Sites of the Lebaye Plateau in the Okondja Basin (SE-GABON)

  AUTHORS: Ismaël Estime Mbagou Mwe-Zue Ona, Charlie Morelle Angue Minto’o, Dieudonné Ndzengboro Endamane, Gdh Angone Angone, Audril Nziengui-Ndala

  KEYWORDS: Lithostratigraphy, Mineralization, Lamellar, Supergene, Manganese, Hydrogeological

  JOURNAL NAME: International Journal of Geosciences, Vol.17 No.6, June 24, 2026

  ABSTRACT: This article examines the lithostratigraphy and typology of manganese mineralization on the Lebaye plateau based on trench observations and approximately one hundred rock samples analyzed by portable X-ray fluorescence. It identifies lamellar manganese ore as the main exploitable facies within a supergene alteration profile derived from manganese-bearing ampelites of the Francevillian succession. The manuscript also classifies the ore as medium-grade and raises hydrogeological considerations relevant to the future development of the quarry.