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.