Production and precipitation of rare earth elements in acidic to alkaline coal mine discharges, Appalachian Basin, USA

Brian W. Stewart1, Rosemary C. Capo1, Benjamin C. Hedin2,3, Irene L. R. Wallrich3 and Robert S. Hedin4, (1)University of Pittsburgh, Department of Geology & Environmental Science, Pittsburgh, PA, United States, (2)University of Pittsburgh, Pittsburgh, PA, United States, (3)University of Pittsburgh, Geology & Environmental Science, Pittsburgh, PA, United States, (4)Hedin Environmental, Pittsburgh, PA, United States