Natural occurrence of MgSiO3-limenite and evidence for MgSiO3- perovskite in a shocked L chondrite

Science

Volumn 277, Issue 5324, 1997, Pages 352-355

  Sharp, Thomas G ^a   Lingemann, Cornelia M ^b   Dupas, Catherine ^c   Stöffler, Dieter ^d  

^a ARIZONA STATE UNIVERSITY   (United States)

^b UNIVERSITY OF MÜNSTER   (Germany)

^c UNIVERSITÄT BAYREUTH   (Germany)

^d LEIBNIZ INSTITUTE FOR EVOLUTION AND BIODIVERSITY SCIENCE   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

MAGNESIUM SILICATE; MINERAL;

CHONDRITE; ILMENITE; METEORITE MINERALOGY; PEROVSKITE;

ARTICLE; ASTRONOMY; CRYSTALLIZATION; GEOLOGY; PRESSURE; PRIORITY JOURNAL; THERMODYNAMICS; TRANSMISSION ELECTRON MICROSCOPY;

EID: 0030868614     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.277.5324.352     Document Type: Article

References (45)

1. E. A. Ringwood, Composition and Petrology of the Earth's Mantle (McGraw-Hill International Series in the Earth and Planetary Sciences, McGraw-Hill, New York, 1975), and references therein concerning synthesis of high-pressure minerals.
2. J. J. Gurney, Diamonds in Kimberlites and Related Rocks, vol. 2, Geol. Soc. Am. Spec. Publ. 14, Proc. 4th Int. Kimberlite Conf. (Blackwell, Oxford, 1989), p. 935.
3. R. A. Binns, R. J. Davis, S. J. B. Reed, Nature 221, 943 (1969).
4. B. Mason, J. Nelen, J. S. White, Science 160, 66 (1968).
5. J. V. Smith and B. Mason, ibid. 168, 832 (1970).
6. A. Putnis and G. D. Price, Nature 280, 217 (1979).
7. M. Chen and A. El Goresy, Meteoritics 29, 456 (1994).
8. C. M. Lingemann and D. Stöffler, ibid. 29, 491 (1994); Lunar Planet. Sci. XXVI, 851 (1995).
9. C. M. Lingemann and D. Stöffler, ibid. 29, 491 (1994); Lunar Planet. Sci. XXVI, 851 (1995).
10. F. Langenhorst, P. Joreau, J.-C. Doukhan, Geochim. Cosmochim. Acta 59, 1835 (1995).
11. M. Chen, T. G. Sharp, A. El Goresy, B. Wopenka, X. Xie, Science 271, 1570 (1996).
12. C. M. Lingemann, F. Langenhorst, D. Stöffler, Meteoritics 30, 537 (1995).
13. L.-G. Liu, Geophys. Res. Lett. 1, 277 (1974).
14. N. Kawai, M. Tachimori, E. Ito, Proc. Japan Acad. 50, 378 (1974).
15. L.-G. Liu, Earth Planet. Sci. Lett. 31, 200 (1976).
16. M. Chen, T. G. Sharp, A. El Goresy, B. Wopenka, X. Xie, Lunar Planet. Sci. XXVII, 211 (1996); M. Chen, B. Wopenka, A. El Goresy, T. G. Sharp, Meteoritics 31, A27 (1996).
17. M. Chen, T. G. Sharp, A. El Goresy, B. Wopenka, X. Xie, Lunar Planet. Sci. XXVII, 211 (1996); M. Chen, B. Wopenka, A. El Goresy, T. G. Sharp, Meteoritics 31, A27 (1996).
18. T. G. Sharp, M. Chen, A. El Goresy, Lunar Planet. Sci. XXVII, 1175 (1996); Meteoritics 31, A127 (1996).
19. T. G. Sharp, M. Chen, A. El Goresy, Lunar Planet. Sci. XXVII, 1175 (1996); Meteoritics 31, A127 (1996).
20. A. Bischoff and T. Geiger, Meteoritics 30, 113 (1995).
21. D. Stöffler, K. Keil, E. R. D. Scott, Geochim. Cosmochim. Acta 55, 3845 (1991).
22. Polished thin sections of 20 μm thickness were used for optical, SEM, and microprobe investigations. Selected regions were then removed and prepared for TEM by ion-bombardment thinning. In order to minimize the damage to unstable compounds that can occur from heating and ion bombardment, the samples were prepared without the use of thermal adhesives, and ion milling was done using a liquid-nitrogen-cooled specimen holder. The low-temperature sample-preparation techniques were applied to samples studied in Bayreuth as well as selected samples studied previously in Münster. TEM was performed using Philips CM20 and CM20-FEG instruments operated at 200 kV, and both instruments were equipped with Noran Voyager analytical systems for energy-dispersive x-ray spectroscopy (EDS).
23. G. L. Nord Jr. and C. A. Lawson, Am. Mineral. 74, 160 (1989).
24. P. E. Champness and G. W. Lorimer, J. Mat. Sci. 8, 467 (1973); G. W. Lorimer and P. E. Champness, Am. Mineral. 58, 243 (1973); G. L. Nord Jr., J. S. Huebner, M. Ross, Lunar Planet. Sci. VIII, 732 (1977); G. L. Nord Jr., Phys. Chem. Miner. 6, 109 (1980).
25. P. E. Champness and G. W. Lorimer, J. Mat. Sci. 8, 467 (1973); G. W. Lorimer and P. E. Champness, Am. Mineral. 58, 243 (1973); G. L. Nord Jr., J. S. Huebner, M. Ross, Lunar Planet. Sci. VIII, 732 (1977); G. L. Nord Jr., Phys. Chem. Miner. 6, 109 (1980).
26. P. E. Champness and G. W. Lorimer, J. Mat. Sci. 8, 467 (1973); G. W. Lorimer and P. E. Champness, Am. Mineral. 58, 243 (1973); G. L. Nord Jr., J. S. Huebner, M. Ross, Lunar Planet. Sci. VIII, 732 (1977); G. L. Nord Jr., Phys. Chem. Miner. 6, 109 (1980).
27. P. E. Champness and G. W. Lorimer, J. Mat. Sci. 8, 467 (1973); G. W. Lorimer and P. E. Champness, Am. Mineral. 58, 243 (1973); G. L. Nord Jr., J. S. Huebner, M. Ross, Lunar Planet. Sci. VIII, 732 (1977); G. L. Nord Jr., Phys. Chem. Miner. 6, 109 (1980).
28. S. Heinemann, T. G. Sharp, F. Seifert, D. C. Rubie, Phys. Chem. Miner. 24, 206 (1997).
29. D. Hugh-Jones, T. Sharp, R. Angel, A. Woodland. Eur. J. Mineral. 8, 1337 (1996); D. A. Hugh-Jones and R. J. Angel, Am. Mineral. 79, 405 (1994); D. A. Hugh-Jones, A. B. Woodland, R. J. Angel, ibid. 79, 1032 (1994).
30. D. Hugh-Jones, T. Sharp, R. Angel, A. Woodland. Eur. J. Mineral. 8, 1337 (1996); D. A. Hugh-Jones and R. J. Angel, Am. Mineral. 79, 405 (1994); D. A. Hugh-Jones, A. B. Woodland, R. J. Angel, ibid. 79, 1032 (1994).
31. D. Hugh-Jones, T. Sharp, R. Angel, A. Woodland. Eur. J. Mineral. 8, 1337 (1996); D. A. Hugh-Jones and R. J. Angel, Am. Mineral. 79, 405 (1994); D. A. Hugh-Jones, A. B. Woodland, R. J. Angel, ibid. 79, 1032 (1994).
32. T. Irifune, Nature 370, 131 (1994).
33. Y. Wang, F. Guyot, R. Liebermann, J. Geophys. Res. 97, 12327 (1992).
34. C. M. McCammon, D. C. Rubie, C. R. Ross II, F. Seifert, H. St. C. O'Neill, Am. Mineral. 77, 894 (1992).
35. H. Mori, J. Mineral. Soc. Japan 23, 171 (1994).
36. C. B. Agee, Nature 346, 834 (1990); C. B. Agee, J. Li, M. C. Shannon, S. Ciercone, J. Geophys. Res. 100, 17725 (1995).
37. C. B. Agee, Nature 346, 834 (1990); C. B. Agee, J. Li, M. C. Shannon, S. Ciercone, J. Geophys. Res. 100, 17725 (1995).
38. T. Irifune, T. Koizumi, J.-I. Ando, Phys. Earth Planet. Inter. 96, 147 (1996).
39. S. E. Kesson, J. D. FitzGerald, J. M. G. Shelley, Nature 372, 767 (1994).
40. J. Zhang and C. Herzberg, J. Geophys. Res. 99, 17729 (1994).
41. T. Gasparik, ibid. 97, 15181 (1992).
42. M. J. Toplis, G. Libourel, M. R. Carrol, Geochim. Cosmochim. Acta 58, 797 (1994).
43. M. Chen, B. Wopenka, A. El Goresy, T. G. Sharp, Meteoritics 29, 98 (1996).
44. T. G. Sharp, M. Chen, A. El Goresy, Lunar Planet. Sci. XXVIII, 1283 (1997).
45. We thank two anonymous reviewers for helpful suggestions in the improvement of the manuscript. This work is part of a Ph.D. thesis (C.M.L.) at the Institut für Planetologie, Westfälische Wilhelms-Universität, Münster. It was partially supported by the Deutsche Forschungsgemeinschaft (DFG).