Crystal-structure refinement of Na-bearing clinopyroxenes from mantle-derived eclogite xenoliths

American Mineralogist

Volumn 92, Issue 7, 2007, Pages 1242-1245

  Nestola, Fabrizio ^a,b   Longo, Micaela ^a   McCammon, Catherine ^a   Ballaran, Tiziana Boffa ^a  

^a UNIVERSITÄT BAYREUTH   (Germany)

^b UNIVERSITY OF PADOVA   (Italy)

Author keywords

Crystal structure; Non stoichiometry; Omphacite; Water

Indexed keywords

DIAMOND DEPOSITS; ELECTRON PROBE MICROANALYSIS; INFRARED SPECTROSCOPY; MOLYBDENUM METALLOGRAPHY; SILICATE MINERALS; SINGLE CRYSTALS; VOLCANIC ROCKS; WATER;

CHARGE BALANCES; CLINOPYROXENES; CRYSTAL STRUCTURE REFINEMENT; DIAMOND FORMATION; NON STOICHIOMETRY; NON-STOICHIOMETRIC; OMPHACITE; SINGLE CRYSTAL X-RAY DIFFRACTION;

CRYSTAL STRUCTURE;

CLINOPYROXENE; CRYSTAL STRUCTURE; DIAMOND; ECLOGITE; HYDROGEN; KIMBERLITE; SODIUM; STOICHIOMETRY; XENOLITH;

EID: 34547435170     PISSN: 0003004X     EISSN: None     Source Type: Journal    
DOI: 10.2138/am.2007.2654     Document Type: Article

References (28)

1. Angel, R.J. (2003) Automated profile analysis for single-crystal diffraction data. Journal of Applied Crystallograhy, 36, 295-300.
2. Angel, R.J. (2004) Absorption corrections for diamond-anvil pressure cells implemented in the software package Absorb6.0. Journal of Applied Crystallography, 37, 486-492.
3. Bell, D., Ihinger, P., and Rossman, G. (1995) Quantitative analysis of trace OH in garnet and pyroxenes. American Mineralogist, 80, 465-474.
4. Boffa Ballaran, T., Carpenter, M.A., Domeneghetti, M.C., and Tazzoli, V. (1998) Structural mechanisms of solid solution and cation ordering in augite-jadeite pyroxenes: I. A macroscopic perspective. American Mineralogist, 83, 419-433.
5. Bromiley, G.D. and Keppler, H. (2004) An experimental investigation of hydroxyl solubility in jadeite and Na-rich clinopyroxenes. Contributions to Mineralogy and Petrology, 147, 189-200.
6. Cameron, M., Sueno, S., Prewitt, C.T., and Papike, J.J. (1973) High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite, spodumene, and ureyite. American Mineralogist, 58, 594-618.
7. Carpenter, M.A. (1981) Time-temperature-transformation (TTT) analysis of cation disordering in omphacites. Contribution to Mineralogy and Petrology, 78, 433-440.
8. 1/c pigeonite. American Mineralogist, 90, 1816-1823.
9. Ellis, D.J. and Green, D.H. (1979) An experimental study of the effect of Ca upon garnet-clinopyroxene Fe-Mg exchange. Contributions to Mineralogy and Petrology, 71, 13-22.
10. 2. American Mineralogist, 71, 686-693.
11. Ingrin, J. and Skogby, H. (2000) Hydrogen in nominally anhydrous upper-mantle minerals: Concentration levels and implications. European Journal of Mineralogy, 12, 543-570.
12. 2O transport into the mantle. American Mineralogist, 88, 229-234.
13. Koch-Müller, M., Matsyuk, S.S., and Wirth, R. (2004) Hydroxyl in omphacites and omphacitic clinopyroxenes of upper mantle to lower crustal origin beneath the Siberian platform. American Mineralogist, 89, 921-931.
14. Matsyuk, S.S., Langer, K., and Hösch, A. (1998) Hydroxyl defects in garnets from mantle xenoliths in kimberlites of the Siberian platform. Contributions to Mineralogy and Petrology, 132, 163-179.
15. McCormick, T.C. (1986) Crystal-chemical aspects of nonstoichiometric pyroxenes. American Mineralogist, 71, 1434-1440.
16. Oberti, R. and Caporuscio, F. (1991) Crystal chemistry of clinopyroxenes from mantle eclogites: a study of the key role of the M2 site population by means of crystal-structure refinement. American Mineralogist 76, 1141-1152.
17. Okui, M., Sawada, H., and Marumo, F. (1998) Strcture refinement of a nonstoichiometric pyroxene synthesized under ambient pressure. Physics and Chemistry of Minerals, 25, 318-322.
18. Rossi, G., Smith, D.C., Ungaretti, L., and Domeneghetti, M.C. (1983) Crystal-chemistry and catio ordering in the system diopside-jadeite: a detailed study by crystal-structure refinement. Contribution to Mineralogy and Petrology, 83, 247-268.
19. Rossi, G., Oberti, R., Dal Negro, A., Molin, G.M., and Mellini, M. (1987) Residual electron density at the M2 site in C2/c clinopyroxenes: relationships with bulk chemistry and sub-solidus evolution. Physics and Chemistry of Minerals, 14, 514-520.
20. Sheldrick, G.M. (1997) Programs for Crystal Structure Analysis (Release 97-2). Institüt für Anorganische Chemie der Universität, Göttingen, Germany.
21. Skogby, H. (2006) Water in natural mantle minerals I: Pyroxenes. In H. Keppler and J.R. Smyth, Eds., Water in Nominally Anhydrous Minerals, 62, p. 155-167. Reviews in Mineralogy and Geochemistry, Mineralogical Society of America, Chantilly, Virginia.
22. Smyth, J.R. (1980) Cation vacancies and crystal chemistry of breakdown reactions in kimberlitic omphacites. American Mineralogist, 65, 1185-1191.
23. Smyth, J.R., Bell, D.R., and Rossman, G.R. (1991) Incorporation of hydroxyl in upper-mantle clinopyroxenes. Nature, 351, 732-735.
24. Snyder, G.A., Taylor, L.A., Jerde, E.A., Clayton, R.N., Mayeda, T.K., Deines, P., Rossman, G.R., and Sobolev, N.V. (1995) Archean mantle heterogeneity and the origin of diamondiferous eclogites, Siberia: Evidence from stable isotopes and hydroxyl in garnet. American Mineralogist, 80, 799-809.
25. 6) and its relations to the fractionation behavior of Mn in Fe,Mg-orthopyroxene. American Mineralogist, 90, 155-161.
26. Wilson, A.J.C. (1995) International Tables for Crystallography, Volume C. Kluwer Academic Publishers, Dordrecht.
27. Withers, A.C., Wood, B.J., and Carroll, M.R. (1998) The OH content of pyrope at high pressure. Chemical Geology, 147, 161-171.
28. Wood, B.J. and Henderson, C.M.B. (1978) Compositions and unit-cell parameters of synthetic non-stoichiometric tschermakitic clinopyroxenes. American Mineralogist, 63, 66-72.