Publication - Journal Article Rare earth minerals in a “no tonstein” section of the Dean (Fire Clay) coal, Knox County, Kentucky DOI https://doi.org/10.1016/j.coal.2018.05.001 Journal Article International Journal of Coal Geology, vol. 193, pp. 73-86, 2018 Authors James C. Hower, Debora Berti, Michael F. Hochella, Sarah M. Mardon Language English