title: Sulfide solubilities in alteration-controlled systems.
abstract: Solubilities of sphalerite (ZnS) and galena (PbS) were determined at 300 degrees to 500 degrees C and 1000 bars total pressure in a chemical environment buffered by silicate mineral equilibria. Chloride solutions and muscovite-bearing assemblages characteristic of hydrothermal wall-rock alteration were used; weak acidities at temperature were therefore involved. The metal concentrations encountered tended to be higher than those observed in high bisulfide-H(2)S systems at neutral to weakly basic pH used in most previous experimentation; the chemical conditions of the work, although not completely satisfactory, are geologically more realistic than previous experimentation done in the basic-pH region.
authors.forename: J J
authors.initials: JJ
authors.lastname: Hemley
authors.forename: C
authors.initials: C
authors.lastname: Meyer
authors.forename: C J
authors.initials: CJ
authors.lastname: Hodgson
authors.forename: A B
authors.initials: AB
authors.lastname: Thatcher