The effect of iron on the P21/c to C2/c transition in (Mg,Fe)SiO3 clinopyroxenes

European Journal of Mineralogy

Volumn 11, Issue 3, 1999, Pages 585-589

  Ross, Nancy L ^a   Reynard, Bruno ^b  

^a UNIVERSITY COLLEGE LONDON   (United Kingdom)

^b UNIVERSITÉ DE LYON   (France)

Author keywords

High pressure; Phase transition; Pyroxenes; Raman spectroscopy

Indexed keywords

CRYSTAL STRUCTURE; HIGH PRESSURE EFFECTS; HYSTERESIS; IRON; IRON COMPOUNDS; MAGNESIUM COMPOUNDS; PHASE TRANSITIONS; RAMAN SPECTROSCOPY; SILICATE MINERALS; SILICON;

CLINOPYROXENES; CRYSTAL FIELD STABILIZATION ENERGIES; HIGH PRESSURE; HIGH-PRESSURE RAMAN SPECTROSCOPIES; IRON CONTENT; OCTAHEDRAL SITES; PYROXENES; TRANSITION PRESSURE;

IRON METALLOGRAPHY;

CLINOPYROXENE; IRON; PHASE TRANSITION;

EID: 0032888111     PISSN: 09351221     EISSN: None     Source Type: Journal    
DOI: 10.1127/ejm/11/3/0585     Document Type: Article

References (18)

1. Anderson, D.L. (1989): Theory of the Earth. Blackwell Scientific, Boston, Mass.
2. Angel, R.J. & Hugh-Jones, D.A. (1994): Equations of state and thermodynamic properties of enstatite pyroxenes. J. Geophys. Res., 99, 19777-19783.
3. Angel, R.J., Chopelas, A., Ross, N.L. (1992): Stability of high-density clinoenstatite at upper-mantle pressures. Nature, 358, 322-324.
4. 1/c clinopyroxenes. Phys. Chem. Minerals, 25, 249-258.
5. 1/c-C2/c phase transitions in clinopyroxenes: Influence of cation size and electronic structure. Am. Mineral., 83, 1176-1181.
6. 6. EOS Trans. AGU, 53, 539.
7. Hugh-Jones, D.A., Woodland, A.B., Angel, R.J. (1994): The structure of high-pressure C2/c ferrosilite and crystal chemistry of high-pressure C2/c pyroxenes. Am. Mineral., 79, 1032-1041.
8. Kanzaki, M. (1991): Ortho/clinoenstatite transition. Phys. Chem. Minerals, 17, 726-730.
9. Lemos, V. & Camargo, F. (1990): Effects of pressure on the Raman spectra of a 4:1 methanol:ethanol mixture. J. Raman Spectroscopy, 21, 123-126.
10. Lindsley, D.H. (1965): Ferrosilite. Carnegie Inst. of Washington Yearbook, 65, 148-149.
11. Pacalo, R.E.G. & Gasparik, T. (1990): Reversals of the orthoenstatite-clinoenstatite transition at high pressures and temperatures. J. Geophys. Res., 95, 15853-15858.
12. Quérel, G. (1997): Cristallochimie des éléments traces dans les phases du manteau terrestre: Applications de la spectroscopie de luminescence à haute pression et haute température. Ph.D. Thesis, University of Rennes, 241 p.
13. 4 olivines. Phys. Chem. Minerals, 24, 77-84.
14. Ringwood, A.E. (1975): Composition and Petrology of the Earth's Mantle. McGraw-Hill, New York.
15. Ross, N.L. & Sowerby, J.R. (1999): High-pressure crystal-field spectra of single-crystal clinoferrosilite. Eur. J. Mineral., in press.
16. Woodland, A.B. (1998): The orthorhombic to high-P monoclinic transition in Mg-Fe pyroxenes: Can it produce a seismic discontinuity? Geophys. Res. Lett., 25, 1241-1244.
17. 3 and implications for the mineralogy of the Earth's upper mantle. Eur. J. Mineral., 9, 245-254.
18. Woodland, A.B., McCammon, C., Angel, R.J. (1997): Intersite partitioning of Mg and Fe in Ca-free high-pressure C2/c clinopyroxene. Am. Mineral., 82, 923-930.