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An X-ray investigation of green mica in khondalite from Auranga-Koel Valley, Palamau, Bihar, India

Published online by Cambridge University Press:  14 March 2018

M. P. Gupta
Affiliation:
Department of Physics, Ranchi University, Bihar, India
N. P. Gupta
Affiliation:
Department of Physics, Ranchi University, Bihar, India

Summary

A new variety of chrome mica containing V2O3 and TiO2 has been investigated by X-rays. It is shown that the crystals of this mica are monoclinic with a= 5·25 Å, b = 9·03 Å, c = 20·11 Å, β = 96·00′, space group C 2/c. Comparison of the intensities of the X-ray powder lines of this new variety of mica with that of pure muscovite may indicate structural changes. The optical properties and chemical composition of the mica are described.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1967

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References

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