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Psilomelane from India

Published online by Cambridge University Press:  14 March 2018

Bibhuti Mukherjee
Bibhuti Mukherjee*
Affiliation:
Geological Survey of India, Calcutta
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Summary

Mukherjee's definition of psilomelane, A3X6Mn8O16 of orthorhombic symmetry with the space group P222 and the dimensions determined for a single crystal of the Schneeberg sample, is found true for the psilomelane from Ratanpur, India. The indexing of powder data of the Ratanpur sample with the orthorhombic axes a 9·45, b 13·90, c 5·72 Å is most satisfactory.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 35 , Issue 275 , September 1966 , pp. 971 - 974
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1966

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References

Lipson, (H.), 1949. Acta Cryst., vol. 2, p. 43 [M.A. 11-96].Google Scholar
Mukherjee, (B.), 1959a. Min. Mag., vol. 32, p. 166.Google Scholar
Mukherjee, (B.), 1959b. Ibid., p. 332.Google Scholar
Mukherjee, (B.), 1965. Ibid., vol. 35, p. 643.Google Scholar
Sinha, (B. N.), 1963. Rec. Geol. Surv. India, vol. 92, p. 253.Google Scholar