Calculation of C-O-H-S equilibria at constant bulk composition: some petrologic implications.

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Abstract

Geologically reasonable amounts of fluids in the C-O-H-S system can control oxidation and sulphidation states of mineral assemblages in both closed and open systems. Examples of fluid buffering are given for graphitic metamorphic rocks, crystallizing volatile-rich felsic magmas, and skarns. The effect is likely to be most important for the last example where sequences of retrograde assemblages are compatible with the cooling of a single fluid. -K.F.

Original languageEnglish (US)
Pages (from-to)381-386
Number of pages6
JournalCarnegie Institution of Washington Year Book
Volume82
Issue number1905
StatePublished - Jan 1 1983
Externally publishedYes

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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