TY - RPRT TI - The porphyry copper deposit exposed in the Liberty open-pit mine near Ely, Nevada; Part 2, The formation of hydrothermal alteration zones AU - Robert O. Fournier PY - 1967 DO - 10.2113/gsecongeo.62.2.207 UR - https://pubs.usgs.gov/publication/70210842 ID - 70210842 ER -