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