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Synthesis and Rietveld crystal structure refinement of mackinawite, tetragonal FeS

Published online by Cambridge University Press:  05 July 2018

A. R. Lennie ,
S. A. T. Redfern ,
P. F. Schofield  and
D. J. Vaughan
A. R. Lennie
Affiliation:
Department of Earth Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
S. A. T. Redfern
Affiliation:
Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ, UK
P. F. Schofield
Affiliation:
Department of Mineralogy, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK
D. J. Vaughan
Affiliation:
Department of Earth Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
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Abstract

Mackinawite, tetragonal FeS, has been synthesised by reacting iron with Na2S solutions. A Rietveld structure refinement of X-ray powder diffraction data, recorded using X-rays monochromated from synchrotron radiation with a wavelength of 0.6023 Å, has been performed. The structure has been refined in the tetragonal space group, P4/nmm, and has the following cell parameters: a = 3.6735(4), c = 5.0328(7) Å, V = 67.914(24) Å3. Our refinement shows that the FeS4 tetrahedron in mackinawite is almost perfectly regular, with a much smaller distortion than has been previously reported. An improved X-ray diffraction data set is provided.

Keywords

mackinawiteRietveld structure refinementsynthesis
Type
Experimental Mineralogy
Information
Mineralogical Magazine , Volume 59 , Issue 397 , December 1995 , pp. 677 - 683
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1995

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