Work on the creation of geomechanical models of the Lefa deposit has been completed
CMT Consulting has completed work on the creation of geological, structural and block geomechanical models of the Lefa deposit, which is being developed by the gold mining company of the same name, part of the international company Nordgold.
The Lefa gold deposit is located in West Africa on the territory of the Republic of Guinea in the area of the source of the Bamako River between the towns of Afea Kourou (568m) and the town of Caretta (658m). and is one of the largest gold deposits in the country.
The deposit is located within the large Siguiri volcanic-sedimentary basin, which is part of the Birimian terrane of the West African craton. Productive gold mineralization is formed by stockwork bodies with veinlets of quartz-carbonate-sulfide composition located in Proterozoic metasandstones. The entire rock mass is intruded by numerous intrusive bodies of predominantly dolerite composition. The rocks are metamorphosed and covered by a thick weathering crust. The deposit is confined to the main fault system of north-eastern strike and the secondary faults that feed it, which are ore-controlling.
CMT specialists visited open pits to collect additional geological information. As part of the visit, mapping routes were taken along the quarry benches, recording the main structures and geological bodies.
The geological model of the field massif includes all lithological domains, including layering of the massif based on mapping and directional drilling, as well as tectonic fault planes.
The frameworks of geological domains subsequently formed the basis for encoding the attribute information of the block geomechanical model.
