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Science 26 January 1973:
Vol. 179. no. 4071, pp. 375 - 377
DOI: 10.1126/science.179.4071.375
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Articles

Magnetic Transitions Observed in Sulfide Minerals at Elevated Pressures and Their Geophysical Significance

David J. Vaughan 1 and John A. Tossell 1

1 Department of Earth and Planetary Sciences, Massachusetts Institute of Technology, Cambridge 02139

The magnetic behavior of iron in chalcopyrite (CuFeS2) and pyrrhotite (Fe7S8) in the pressure range from 1 atmosphere to 20 kilobars has been studied by Mössbauer spectroscopy. Both chalcopyrite and pyrrhotite exhibit transitions from magnetically ordered to disordered states over the range from 5 to 16 kilobars. Both transitions, particularly the loss of ferrimagnetism in pyrrhotite, have geophysical consequences.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Spectroscopic Studies of Sulfides.
P. L. Wincott and D. J. Vaughan (2006)
Reviews in Mineralogy and Geochemistry 61, 181-229
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