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Physics and Chemistry of Minerals

, Volume 34, Issue 8, pp 551–558 | Cite as

A Raman spectroscopic investigation of Fe-rich sphalerite: effect of fe-substitution

  • Sherif Kharbish
Original Paper

Abstract

A Raman spectroscopic study of Fe-rich sphalerite (Zn1 − x Fe x S) has been carried out for six samples with 0.10 ≤ x ≤ 0.24. Both the intensities and frequencies of the TO and LO modes of sphalerite are approximately independent of Fe concentration. However, the substitution of Zn by Fe results in five additional bands with frequencies between the TO (271 cm−1) and LO (350 cm−1) modes. Three of these bands are attributed to resonance modes (i.e. Y 1, Y 2 and Y 3 modes). The fourth band (B mode) is assigned to a breathing mode of the nearest-neighbor sulfur atoms around the Fe atoms. The band at 337 cm−1 is attributed to the presence of Fe3+. The excellent correlations between the normalized intensities of these five different modes and x Fe show that these modes depend on Fe-content. Another extra mode at 287 cm−1 is assigned to the presence of Cd in sphalerite.

Keywords

Fe-rich sphalerite Cd-sphalerite Resonance modes Breathing mode Raman spectroscopy 

Notes

Acknowledgments

The author is grateful to Prof. Dr. E. Libowitzky, for his kind help during the Raman measurements, helpful discussions and for carefully reading the manuscript. Thanks also for Prof. Dr. A. Beran for kindly providing samples and a critical reading of the manuscript. I am also grateful to Prof. Dr. Effenberger for carrying out lattice parameter measurements. Thanks are also due to two reviewers (Prof. Dr. K. Bente and anonymous) for their valuable comments that helped to improve the manuscript.

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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Institut für Mineralogie und KristallographieUniversität Wien-GeozentrumWienAustria
  2. 2.Geology Department, Faculty of ScienceZagazig UniversityZagazig CityEgypt

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