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Science 22 December 1967:
Vol. 158. no. 3808, pp. 1580 - 1582
DOI: 10.1126/science.158.3808.1580
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Articles

Sulfide Solubilities in Alteration-Controlled Systems

J. J. Hemley 1, C. Meyer 2, C. J. Hodgson 2, and A. B. Thatcher 2

1 U.S. Geological Survey, Menlo Park, California
2 University of California, Berkeley

Solubilities of sphalerite (ZnS) and galena (PbS) were determined at 300° to 500°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-H2S 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.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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