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Unit cell volumes of synthetic orthoenstatite and low clinoenstatite

Published online by Cambridge University Press:  14 March 2018

D. A. Stephenson ,
C. B. Sclar  and
J. V. Smith
D. A. Stephenson
Affiliation:
Department of Geophysical Sciences, University of Chicago, Chicago, Illinois
C. B. Sclar
Affiliation:
Physics of Solids Division, Battelle Memorial Institute, Columbus, Ohio
J. V. Smith
Affiliation:
Department of Geophysical Sciences, University of Chicago, Chicago, Illinois
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Summary

Cell dimensions and densities derived from least-squares refinement of X-ray powder diffractometer patterns are: orthoenstatite, a 18·2249±0·0013, b 8·8149±0·0008, c 5·1746±0·0008 Å, V 831·30±0·14 Å3, D 3·208 g/cc ; low clinoenstatite, a 9·6065±0·0011, b 8·8146±0·0007, c 5·1688±0·0006 Å, β = 108·335± 0·009, V 415·46±0·09 Å3, D 3·210 gm/cc. Because orthoenstatite transforms reversibly to clinoenstatite at high pressure and low temperature, and because a statistical test shows that orthoenstatite is less dense than clinoenstatite at the 90 % confidence level (in accord with the direction of slope of the experimental transition curve), it is no longer possible to regard low clinoenstatite as a metastable form of MgSiO3.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 35 , Issue 274 , June 1966 , pp. 838 - 846
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1966

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References

Allen, (E. T.), Wright, (F. E.), and Clement, (J. K.), 1906. Amer. Journ. Sci., ser. 4, vol. 22, p. 385.CrossRefGoogle Scholar
Atlas, (L.), 1952. Journ. Geol., vol. 60, p. 125.Google Scholar
Boyd, (F. R.) and England, (J. L.), 1963. Carnegie Inst. Washington Year Book, vol. 62, p. 118.Google Scholar
Boyd, (F. R.) and Schairer, (J. F.), 1964. Journ. Petrology, vol. 5, p. 275.CrossRefGoogle Scholar
Boyd, (F. R.), England, (J. L.), and Davis, (B. T. C.), 1964. Journ. Geophys. Res., vol. 69, p. 2101.CrossRefGoogle Scholar
Brown, (W. L.) and Smith, (J. V.), 1963. Zeitschr. Krist., vol. 118, p. 186.Google Scholar
Brown, (W. L.), Morimoto, (N.), and Smith, (J. V.), 1961. Journ. Geol., vol. 69, p. 609.Google Scholar
Burnham, (C. W.), 1961. Carnegie Inst. Washington Year Book, vol. 61, p. 134.Google Scholar
Davis, (B. C. T.), 1963. Ibid., vol. 62, p. 103.Google Scholar
Dewing, (W. E.), 1943. Statistical adjustment of data, chapters 3 and 9. John Wiley, New York.Google Scholar
Foshag, (W. F.), 1940. Amer. Min., vol. 25, p. 779.Google Scholar
Greenwood, (H. J.), 1963. Journ. Petrology, vol. 4, p. 317.CrossRefGoogle Scholar
Hess, (H. H.), 1952. Amer. Journ. Sci., Bowen vol., p. 173.Google Scholar
Jaffe, (H. W.), 1956. Amer. Min., vol. 41, p. 757.Google Scholar
Kuno, (H.) and Hess, (H. H.), 1953. Amer. Journ. Sci., vol. 251, p. 741.Google Scholar
Larsen, (E. S.) and Berman, (H.), 1934. U.S. Geological Survey, Bull. 848, p. 30.Google Scholar
Lindemann, (W.), 1956. Geol. B1. Nordost-Bayern, vol. 6, p. 118.Google Scholar
Lindsley, (D. H.) and Boyd, (F. R.), 1965. Abstr. in Trans. Amer. Geophys. Union, vol. 46, p. 181.Google Scholar
Morimoto, (N.), 1959. Carnegie Inst. Washington Year Book, vol. 58, p. 197.Google Scholar
Morimoto, (N.), Appleman, (D. E.), and Evans, (H. T.), 1960. Zeitschr. Krist., vol. 114, p. 120.Google Scholar
Parrish, (W.), Taylor, (J.), and Mack, (M.), 1964. Advances in X-Ray Analysis, vol. 7. Plenum Press, New York.Google Scholar
Perrotta, (A. J.) and Stephenson, (D. A.), 1965. Science, vol. 148, p. 1090.Google Scholar
Pollack, (S. S.) and Ruble, (W. D.), 1964. Amer. Min., vol. 49, p. 983.Google Scholar
Sclar, (C. B.), Carrison, (L. C.), and Schwartz, (C. M.), 1964. Abstr. in Trans. Amer. Geophys. Union, vol. 45, p. 121.Google Scholar
Swanson, (H. E.), Gilfrich, (N. T.), and Cook, (M. I.), 1956. Nat. Bur. Stand. Circular 539, vol. 6, p. 32.Google Scholar
Winchell, (A. N.), 1931. The Microscopic Characters of Artificial Inorganic Solid Substances. John Wiley, New York.Google Scholar
Winchell, (A. N.), 1933. Elements of Optical Mineralogy, Part II, Descriptions of Minerals, 3rd edn. John Wiley, New York.Google Scholar
Winchell, (A. N.) and Winchell, (H.), 1951. Elements of Optical Mineralogy, Part II. Descriptions of Minerals, 4th edn. John Wiley, New York.CrossRefGoogle Scholar