Do dislocations and stacking faults increase the oxidation rate of pyrites?
- Pittsburgh Energy Technology Center, PA (United States)
- Univ. of California, San Diego, La Jolla, CA (United States)
- Sandia National Labs., Albuquerque, NM (United States)
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{degrees}C showed an increase in the number of reactive sites and shock-loaded samples exposed to mean bulk shock temperatures between 500 and 700{degrees}C showed decreases in the number of reactive sites.
- OSTI ID:
- 28580
- Journal Information:
- Geochimica et Cosmochimica Acta, Journal Name: Geochimica et Cosmochimica Acta Journal Issue: 21 Vol. 58; ISSN GCACAK; ISSN 0016-7037
- Country of Publication:
- United States
- Language:
- English
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