Physics and Chemistry of Minerals

, Volume 13, Issue 2, pp 91–95 | Cite as

Comparison of the raman microprobe spectra of (Mg, Fe)2SiO4 and Mg2GeO4 with olivine and spinel structures

  • F. Guyot
  • H. Boyer
  • M. Madon
  • B. Velde
  • J. P. Poirier
Article

Abstract

Raman microprobe (RMP) spectra were produced for each of the olivine and spinel structured phases of Mg2GeO4 and (Mg, Fe)2SiO4.

The assembled data show that bands due to the tetrahedra in silicate and germanate olivines shift in a way that indicates a dominant mass effect. This correspondence is difficult to make in spinels due to differences in structural type. Differences in Fe/Mg content of olivine shift the tetrahedral vibration bands only slightly, but their linear shifts could be used to indicate the composition of the phase.

Keywords

Silicate Olivine Mineral Resource Material Processing Structural Type 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Akaogi M, Ross NL, McMillan P, Navrotsky A (1984) The Mg2SiO4 polymorphs (olivine, modified spinel and spinel) — thermodynamic properties from oxide melt solution calorimetry, phase relations and models of lattice vibrations. Am Mineral 69:499–512Google Scholar
  2. Basset WA (1979) The diamond anvil cell and the nature of the earths mantle. Ann Rev Earth Planet Sci 7:357–384Google Scholar
  3. Besson JM, Pinceaux JP, Anastopoulos C, Velde B (1982) Raman spectra of olivine up to 65 kilobars. J Geophys Res 87:10773–10775Google Scholar
  4. Binns RA (1970) (Mg, Fe)2SiO4 spinel in a meteorite. Phys Earth Planet Inter 3:156–160Google Scholar
  5. Burns RG, Huggins FE (1972) Cation determination curves for Mg-Fe-Mn olivines from vibrational spectra. Am Mineral 57:967–985Google Scholar
  6. Dachille F, Roy R (1960) High pressure studies of the system Mg2GeO4-Mg2 SiO4 with special reference to the olivine spinel transition. Am J Sci 258:225–246Google Scholar
  7. Durif-Varambon A, Bertaut EF, Pauthenet R (1956) Etude des germanates spinelles. Ann de Chimie 1:525–543Google Scholar
  8. Griffith WP (1969) Raman studies on rock-forming minerals. Part 1. Orthosilicates and Cyclosilicates. J Chem Soc A:211Google Scholar
  9. Handke M (1984) Force constants and chemical bond character in (SiO4) and (GeO4) anions in orthosilicates and orthogermanates. J Mol Struct 114:187–190Google Scholar
  10. Handke M, Urban M (1982) IR and Raman spectra of alkaline earth metals orthosilicates. J Mol Struct 79:353–356Google Scholar
  11. Hazen RM (1976) Effects of temperature and pressure on the crystal structure of forsterite. Am Mineral 61:1280–1293Google Scholar
  12. Hohler V, Funk E (1973) Schwingungsspektren von Kristallen mit Olivinstruktur. Z Naturforsch 28b:125–139Google Scholar
  13. Iishi K (1978) Lattice dynamics of forsterite. Am Mineral 63:1198–1208Google Scholar
  14. Jeanloz R (1980) Infra-red spectra of olivine polymorphs: α, β phase and spinel. Phys Chem Minerals 5:327–341Google Scholar
  15. Madon M, Poirier JP (1983) Transmission electron microscopy observations of α, β and γ (Mg, Fe)2SiO4 in shocked meteorites: planar defects and plymorphic transitions. Phys Earth Planet Interiors 33:31–44Google Scholar
  16. Paques-Ledent MT, Tarte P (1973) Vibrational studies of olivine — type compounds — I. The IR and Raman spectra of the isotopic species of Mg2SiO4. Spectrochim Acta 29A:1007–1016Google Scholar
  17. Piriou B, McMillan P (1983) The high-frequency vibrational spectra of vitreous and crystalline orthosilicates. Am Mineral 68:426–443Google Scholar
  18. Price GD (1983) The nature and significance of stacking faults in wadsleyite, natural β (Mg, Fe)2SiO4 from the Peace River meteorite. Phys Earth Planet Interiors 33:134–147Google Scholar
  19. Robbins CR, Levin EM (1959) The system magnesium oxide-germanium dioxide. Am J Sci 257:63–70Google Scholar
  20. Tarte P (1963) Etude infra-rouge des orthosilicates et des orthogermanates. II, structures du type olivine et monticellite. Spectrochim Acta 19:25–47. III, structures du type spinelle. Spectrochim Acta 19:49–71Google Scholar

Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • F. Guyot
    • 1
  • H. Boyer
    • 2
  • M. Madon
    • 1
  • B. Velde
    • 3
  • J. P. Poirier
    • 1
  1. 1.Institut de Physique du Globe de ParisUniversité Paris 6Paris Cedex 05France
  2. 2.Instruments S.A. Jobin-YvonLongjumeau CedexFrance
  3. 3.Laboratoire de Géologie, E.N.S.Paris Cedex 05France

Personalised recommendations