Site disorder revealed through Raman spectra from oriented single crystals: A case study on karooite (MgTi2O5)

American Mineralogist

Volumn 91, Issue 5-6, 2006, Pages 790-793

  Liermann, Hanns Peter ^a,b   Downs, Robert T ^c   Yang, Hexiong ^b  

^a ARGONNE NATIONAL LABORATORY   (United States)

^b FLORIDA INTERNATIONAL UNIVERSITY   (United States)

^c University of Arizona   (United States)

Author keywords

Cation ordering state; Karooite; Pseudobrookite; Raman spectroscopy

Indexed keywords

MAGNESIUM COMPOUNDS; RAMAN SPECTROSCOPY; SINGLE CRYSTALS; TITANIUM COMPOUNDS;

CATION ORDERING; CRYSTAL PROPERTIES; INNER PRODUCT; KAROOITE; ORDERING STATE; PSEUDOBROOKITE; RAMAN SPECTROSCOPIC; SITE DISORDER;

RAMAN SCATTERING;

CRYSTAL STRUCTURE; RAMAN SPECTROSCOPY;

EID: 33745441068     PISSN: 0003004X     EISSN: None     Source Type: Journal    
DOI: 10.2138/am.2006.2027     Document Type: Article

References (19)

1. Anderson, A.T., Crewe, A.V., Goldsmit, J.R., Moore, P.B., Newton, J.C., Olsen, E.J., Smith, J.V., and Wyllie, P.J. (1970) Petrological history of the Moon suggested by petrography, mineralogy, and crystallography. Science, 167(3918), 587-588.
2. Boffa-Ballaran, T. and Carpenter, M.A. (2003) Line broadening and enthalpy: Some empirical calibration of solid-solution behavior from IR spectra. Phase Transitions, 76, 137-154.
3. 4 spinel. Physical Review B, 45, 500-502.
4. 4 Spinel observed by rectangular parallelepiped ultrasonic resonance and Raman measurements. Pure and Applied Geophysics, 141, 415-444.
5. Ganguly, J. (1982) Mg-Fe order-disorder in ferromagnesian silicates: II. Thermo-dynamics, kinetics and geological applications. In S.K. Saxena, Ed., Advances in Physical Geochemistry, vol. 2, p. 1-99. Springer-Verlag, New York.
6. Ganguly, J. and Stimpfl, M. (2000) Cation ordering in orthopyroxenes from two stony-iron meteorites: Implications for cooling rates and metal-silicate mixing. Geochimica et Cosmochimica Acta, 64, 1292-1297.
7. Ghose, S. and Ganguly, J. (1982) Mg-Fe order-disorder in ferromagnesian silicates. In S.K. Saxena, Ed., Advances in Physical Geochemistry, vol. 2, p. 1-99. Springer-Verlag, New York.
8. Haggerty, S.E. (1973) Ortho and para-armalcolite samples in APOLLO 17. Nature, 242, 123-125.
9. Hazen, R.M. and Navrotsky, A. (1996) Effects of pressure on order-disorder reactions. American Mineralogist, 81, 1021-1035.
10. Huang, E., Chen, C.H., Huang, T., Lin, E.H., and Xu, Ji-An (2000) Raman spectroscopic characteristics of Mg-Fe-Ca pyroxenes. American Mineralogist, 85, 473-479.
11. Lind, M.D. and Houseley, R.M. (1972) Crystallization studies of lunar igneous rocks: Crystal structure of synthetic armalcolite. Science, 175, 521-523.
12. Lindsley, D.H., Kesson, S.E., Hartzman, M.J., and Cushman, M.K. (1974) The stability of armalcolite: Experimental studies in the system MgO-Fe-Ti-O. Proceedings of the 5th Lunar Science Conference, Geochemica et Cosmochemica Acta Supplement, 61, 521-534.
13. Salje, E.K.H., Carpenter, M.A., Malcherek, T.G.W., and Boffa Ballaran, T. (2000) Autocorrelation analysis of infrared spectra from minerals. European Journal of Mineralogy, 12, 503-519.
14. Smyth, J.R. (1974) The crystal chemistry of armalcolite from Apollo 17. Earth and Planetary Science Letters, 24, 262-270.
15. Wang, A., Jolliff, B.L., Haskin, L.A., Kuebler, K.E., and Viskupic, M. (2001) Characterization and comparison of structural and compositional features of planetary quadrilateral pyroxenes by Raman spectroscopy. American Mineralogist, 86, 790-806.
16. Wang, A., Kuebler, K.E., Jolliff, B.L., and Haskin, L.A. (2004) Raman spectroscopy of Fe-Ti-Cr-oxides, case study: Martian meteorites EETA79001. American Mineralogist, 89, 665-680.
17. Wechsler, B.A. (1977) Cation distribution and high-temperature crystal chemistry of armalcolite. American Mineralogist, 62, 913-920.
18. 5 by time-of-flight neutron powder diffraction. Acta Crystallographica, B45, 542-549.
19. 5. Journal of Solid State Chemistry, 138, 238-244.