Rare earth elements study of Cretaceous coals from Benue Trough basin, Nigeria: Modes of occurrence for greater sustainability of mining

Segun A. Akinyemi, Bemgba Bevan Nyakuma, Aliyu Jauro, Timileyin A. Olanipekun, Rabelani Mudzielwana, Wilson M. Gitari, Binoy K. Saikia, Guilherme Luiz Dotto, James C. Hower, Luís F.O. Silva