A new high-pressure CaGe2O5 polymorph with 5- and 6-coordinated germanium

American Mineralogist

Volumn 92, Issue 2-3, 2007, Pages 441-443

  Németh, Péter ^a,b,c   Leinenweber, Kurt ^b   Groy, Thomas L ^b   Buseck, Peter R ^a,b  

^a ARIZONA STATE UNIVERSITY   (United States)

^b ARIZONA STATE UNIVERSITY   (United States)

^c CHEMICAL RESEARCH CENTER   (Hungary)

Author keywords

5 and 6 coordinated Ge; CaGe2O5 polymorph; Earth's mantle; Post titanite

Indexed keywords

GERMANIUM; GERMANIUM COMPOUNDS; SILICATES;

EARTH'S MANTLE; GERMANATE; HIGH-PRESSURE CONDITION; HIGH-PRESSURE EXPERIMENT; HIGH-PRESSURE POLYMORPH; NEW HIGH; POST-TITANITE; SPACE GROUPS;

CALCIUM COMPOUNDS;

CALCIUM; EXPERIMENTAL MINERALOGY; GERMANIUM; HIGH PRESSURE; POLYMORPHISM; SILICATE; TITANITE;

EID: 33947192633     PISSN: 0003004X     EISSN: None     Source Type: Journal    
DOI: 10.2138/am.2007.2411     Document Type: Conference Paper

References (20)

1. 5. American Mineralogist, 82, 836-839.
2. Angel, R.J., Ross, N.L., Seifert, F., and Fliervoet, T.F. (1996) Structural characterization of pentacoordinate silicon in a calcium silicate. Nature, 384, 441-444.
3. 5. Zeitschrift für Kristallographie, 144, 82-90.
4. Blessing, R.H. (1995) An empirical correction for absorption anisotropy. Acta Crystallographica, A51, 33-38.
5. 3 system from 8 to 15 GPa. American Mineralogist, 79, 1219-1222.
6. 5. Naturwissenschaften, 68, 92.
7. 29Si NMR. Geophysical Research Letters, 18, 463-466.
8. 5, a new high pressure calcium silicate with five-coordinated silicon synthesized at 1500 °C and 10 GPa. Physics and Chemistry of Minerals, 25, 429-433.
9. 6, a new perovskite structure type. Journal of Solid State Chemistry, 114, 277-281.
10. 5, revisited. Physics and Chemistry of Minerals, 31, 224-231.
11. 9. Zeitschrift für Kristallographie, 127, 173-187.
12. 3 polymorphs (orthopyroxene, clinopyroxene, and ilmenite structures) by calorimetry, spectroscopy, and phase equilibria. American Mineralogist, 73, 1355-1365.
13. 3-type perovskites. American Mineralogist, 68, 1189-1198.
14. Sheldrick, G. M. (1996) SADABS. University of Göttingen, Germany.
15. Sheldrick, G. M. (2001) SHELXTL PC, Version 6.12, An Integrated System for Solving, Refining, and Displaying Crystal Structures from Diffraction Data. Bruker Analytical X-Ray Instruments, Inc., Madison, Wisconsin.
16. 3 perovskite in the Earth's lower mantle. Journal of Geophysical Research, 105, 25955-25968.
17. 9 glass quenched from 1.9 GPa and 1200 °C. American Mineralogist, 74, 965-968.
18. 5). Geophysical Research Letters, 26, 2521-2523.
19. Walker, D. (1991) Lubrication, gasketing, and precision in multianvil experiments. American Mineralogist, 76, 1092-1100.
20. Xue, X., Stebbins, J.F., Kanzaki, M., McMillan, P.F., and Poe, B. (1991) Pressure-induced silicon coordination and tetrahedral structural changes in alkali oxide-silica melts up to 12 GPa: NMR, Raman, and infrared spectroscopy. American Mineralogist, 76, 8-26.