TY - RPRT TI - The Drenchwater deposit, Alaska: An example of a natural low pH environment resulting from weathering of an undisturbed shale-hosted Zn-Pb-Ag deposit AU - G.E. Graham AU - K.D. Kelley PY - 2009 DO - 10.1016/j.apgeochem.2008.11.016 UR - https://pubs.usgs.gov/publication/70032273 ID - 70032273 ER -