Lama, C. (1993) Apport de la méthode K-Ar à la compréhension de l’histoire géologique des granitoïdes birimiens du Liptako (Niger Occidental) et des leucogranites à deux micas de Tagragra d'AKKA (Anti-Atlas Occidental, Maroc). Master’s Thesis, Université de Loraine, Nancy.

has been cited by the following article:

• TITLE: Characteristics of Gold and Its Mineralization Style in the Boulon Djounga Eastern Perimeter of Liptako Mining Company (Central Southwestern Niger)

  AUTHORS: Gambo Ranaou Noura, Kamayé Tourba, Karimou Dia Hantchi, Bouba Hassane, Moussa Konaté

  KEYWORDS: Liptako, Gold Mineralization, Metasediments-Volcanics, Quartz Veins, Sulphurous Minerals, Niger

  JOURNAL NAME: Natural Resources, Vol.15 No.1, January 26, 2024

  ABSTRACT: The Boulon Djounga eastern perimeter is part of the Tiawa operating permit of the Société des Mines du Liptako (SML), located in the central southwestern part of Liptako (Niger). In this study, we used field data, Reverse Circulation (RC) surveys and chemical analyzes of gold to determine the characteristics of gold and its mineralization style. The eastern perimeter of Boulon Djounga is represented by a succession of metabasalts and metasediments both intersected by intrusions of quartz and dolerite dykes, and covered by sandstone and clayey rocks. Gold is present in low contents (0.00 - 0.30 ppm) in the sedimentary cover and in medium (0.30 - 1.00 ppm) or high contents (1.00 - 4.534 ppm) in the metasediments, and in the gray quartz veins and locally in the volcanics. It exists in a disseminated state or in a concentrated state in the surrounding areas in the form of discrete grains associated with sulphurous minerals (pyrite: FeS2, chalcopyrite: CuFeS2 or arsenopyrite: FeAsS). The presence of gold in the quartz veins, and the NE-SW and NW-SE orientations of the ore bodies suggest that the eastern Boulon Djounga gold mineralization would be established during a late magmatic extensive phase.