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The habit of pyrite in some sedimentary rocks

Published online by Cambridge University Press:  14 March 2018

Frank Smithson
Frank Smithson*
Affiliation:
Rothamsted Experimental Station, Harpenden, Hertfordshire
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Summary

Authigenic pyrite crystals or their pseudomorphs found in heavy residues from sedimentary rocks are cubes, octahedra, or pyritohedra. Combinations of these forms are common; trapezohedron and rhombic dodecahedron faces are rare. The cube is most often recorded in the literature, but the octahedron is dominant in some districts and may be favoured by calcareous environment. X-ray tests have been applied and goethite and hematite detected as alteration products.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 31 , Issue 235 , December 1956 , pp. 314 - 318
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1956

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References

page 314 note 1 Travis, C. B. and Greenwood, H. W., Proc. Liverpool Geol. Soc., 1911, vol. 11, p. 116.Google Scholar

page 314 note 2 Bannister, F. A., Min. Mag., 1932, vol. 23, p. 179.CrossRefGoogle Scholar

page 315 note 1 Smithson, F., Proc. Geol. Assoc., 1931, vol. 42, p. 125;CrossRefGoogle Scholar Proc. Yorks. Geol. Soc., 1934, vol. 22, p. 188 ; Quart. Journ. Geol. Soe., 1942, vol. 98, p. 27.

page 315 note 2 Smithson, F., Nature, 1954, vol. 173, p. 1047.CrossRefGoogle Scholar

page 316 note 1 The System of Mineralogy, 7th edn, vol. 1, 1944, p. 683.

page 316 note 2 is the probability that the observed association is due to chance.

page 317 note 1 Boswell, P. G. H., Quart. Journ. Geol. Soc. (Proceedings), 1941, vol. 97, p. lxviii.Google Scholar

page 317 note 2 W. L. Bragg, Atomic Structure of Minerals, p. 71, New York, 1937. The disparities amongst the four cards for pyrite in the 'Index of X-ray Diffraction Data', A.S.T.M., Philadelphia, 1953, are sufficient to preclude their use where recognition of impurities is desired.

page 317 note 3 Rooksby, H. P., in X-ray Identification and Crystal Structure of Clay Minerals, chap. x, Min. Soc., London, 1951.Google Scholar