Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-27T06:53:42.068Z Has data issue: false hasContentIssue false
  • English
  • Français

Subsolidus phase relations in the system ZnWO4-ZnMoO4-MnWO4-MnMoO41

Published online by Cambridge University Press:  14 March 2018

Luke L. Y. Chang
Luke L. Y. Chang*
Affiliation:
Department of Geological Sciences, Cornell University, Ithaca, New York
Get access Rights & Permissions [Opens in a new window]

Summary

Subsolidus phase relations in the systems ZnWO4-MnWO4, ZnWO4-ZnMoO4, MnMoO4-ZnMoO4, and MnWO4-MnMoO4, were investigated by using the quenching technique. A complete series of solid solutions forms in the system ZnWO4-MnWO4 above 840° C, whereas limited solid solubilities were found in the other three. The various limits of solubility are, at 620° C, 4·0 mole % ZnMoO4 in ZnWO4 and 4·0 mole % ZnWO4 in ZnMoO4, 13·0 mole % ZnMoO4 in MnMoO4 and 12·0 mole % MnMoO4 in ZnMoO4, 9·0 mole % MnMoO4 in MnWO4 and 6·0 mole % in MnWO4 in MnMoO4; and at 1000° C, 15·0 mole % ZnMoO4 in ZnWO4 and 15·0 mole % ZnWO4 in ZnMoO4, 36·0 mole % ZnMoO4 in MnMoO4 and 29·0 mole % MnMoO4 in ZnMoO4, 15·0 mole % MnMoO4 in MnWO4 and 27·0 mole % MnWO4 in MnMoO4.

Subsolidus phase relations in the system ZnWO4-ZnMoO4-MnWO4-MnMoO4 were studied at 900° C. The solubility of molybdenum in the (Zn,Mn)WO4 series increases from both end members to a maximum of 27·0 mole % at the composition Mn35Zn65. Both molybdates also have limited ranges of solid solutions, and a three-phase region occupies the central portion of the system defined by three points with compositions of 41 mole % ZnMoO4, 26 mole % MnMoO4, 33 mole % MnWO4; 57 mole % ZnMoO4, 10 mole % MnMoO4, 35 mole % MnWO4; and 27 mole % ZnMoO4, 34 mole % MnWO4, 39 mole % ZnWO4.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 36 , Issue 283 , September 1968 , pp. 992 - 996
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1968

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

1

Contribution No. 517, Department of Geological Sciences, Cornell University.

References

Abrahams, (S. C.) and Reddy, (J. M.), 1965. Journ. Chem. Phys., vol. 43, p. 2533.Google Scholar
Barrett, (C. S.), 1952. Structure of metals, New York, McGraw-Hill, p. 196.Google Scholar
Chang, (L. L. Y.), 1967. Amer. Min., vol. 52, p. 427.Google Scholar
Smith, (G. W.), 1962. Acta Cryst., vol. 15, p. 1054.Google Scholar
Smith, (G. W.) and Iber, (J. A.), 1965. Ibid., vol. 19, p. 269.Google Scholar
Wells, (A. F.), 1962. Structural inorganic chemistry, 3rd edn, Oxford University Press, p. 506.Google Scholar
Young, (A. P.) and Schwartz, (C. M.), 1963. Science, vol. 141, p. 248.Google Scholar