TY - RPRT TI - Chemical composition of the hydrothermal fluids responsible for the lead-zinc deposits at Providencia, Zacatecas, Mexico AU - Robert O. Rye AU - Joseph Haffty PY - 1969 DO - 10.2113/gsecongeo.64.6.629 UR - https://pubs.usgs.gov/publication/70223397 ID - 70223397 ER -