Obaje, N.G., et al. “Mapping and Characterization of Some Industrial Mineral Deposits in North-Central Nigeria As Raw Materials for Industrialization”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 48, no. 1, Aug. 2019, pp. 183-7, https://gssrr.org/JournalOfBasicAndApplied/article/view/10173.