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Economic Geology GSW 2008 Users' Group Meeting
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Economic Geology; November 1965; v. 60; no. 7; p. 1366-1379
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Equilibrium temperature, Ps 2 and Po 2 during formation of the Marmoraton pyrometasomatic iron deposit

Frederick B. Park

Pyrrhotite appears to be in equilibrium with pyrite, is hexagonal, and is relatively pure; frequency distribution for equilibrium temperatures, determined from Arnold's curve, has a maximum at 495 degrees C. At this temperature, the partial pressures of oxygen and sulfur in equilibrium with pyrrhotite-pyrite-magnetite would be about 10 (super -20) and 10 (super -5) atm., respectively. Closed-system behavior in the orebody is attributed to buffering action of the pyrrhotite-pyrite-magnetite assemblage.

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JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
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