Do dislocations and stacking faults increase the oxidation rate of pyrites?

Details Do dislocations and stacking faults increase the oxidation rate of pyrites? Do dislocations and stacking faults increase the oxidation rate of pyrites?

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994gecoa..58.4657m&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 58, Issue 21, pp.4657-4665

Physics

Scientific paper

XPS, SEM and TEM studies were made on coal, non-coal, and shock-loaded pyrites that had been experimentally weathered under high relative humidity. Reactivity (oxidation) of the different pyrite samples may be related to their stacking fault densities. A coal pyrite sample that had the highest stacking fault concentration was also the most reactive pyrite. No systematic relationship between reactivity and dislocation density was observed. Shock-loaded samples exposed to mean bulk shock temperatures between 175 and 475°C showed an increase in the number of reactive sites and shock-loaded samples exposed to mean bulk shock temperatures between 500 and 700°C showed decreases in the number of reactive sites.

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