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Science 27 December 1974:
Vol. 186. no. 4170, pp. 1209 - 1212
DOI: 10.1126/science.186.4170.1209
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Articles

Electron Imaging of Pyrrhotite Superstructures

Larry Pierce 1 and Peter R. Buseck 2

1 Department of Chemistry, Arizona State University, Tempe 85281
2 Departments of Geology and Chemistry, Arizona State University

Natural pyrrhotites, when studied by high resolution electron microscopy, yield crystallographic information on a unit cell scale. Structural heterogeneity is prominent. The many reported superstructures are interpretable through an antiphase model. The 5C pyrrhotite superstructure results from an ordered sequence of antiphase domains while the higher temperature NC type results from a disordered sequence.


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Science. ISSN 0036-8075 (print), 1095-9203 (online)