Crystal structure of a P21/m ferromagnesian cummingtonite at 140 K

American Mineralogist

Volumn 81, Issue 3-4, 1996, Pages 363-368

  Yang, Hexiong ^a,b   Smyth, Joseph R ^a  

^a UNIVERSITY OF COLORADO   (United States)

^b Geophysical Laboratory   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

GEOMETRY; POSITIVE IONS; SILICATES;

BOND DISTANCE; EFFECTIVE SIZE; ISOTROPIC DISPLACEMENT; LOW TEMPERATURES; RELATIVE STABILITIES; STRUCTURE REFINEMENTS;

CRYSTAL STRUCTURE;

CRYSTAL STRUCTURE; CUMMINGTONITE; PHASE TRANSITION;

EID: 0029731257     PISSN: 0003004X     EISSN: None     Source Type: Journal    
DOI: 10.2138/am-1996-3-410     Document Type: Article

References (24)

1. Angel, R.J., Chopelas, A., and Ross, N.L. (1992) Stability of high-density clinoenstatite at upper-mantle pressures. Nature, 358, 322-324.
2. Brown, G.E., Prewitt, C.T., Papike, J.J., and Sueno, S. (1972) A comparison of the structures of low and high pigeonite. Journal of Geophysical Research, 77, 5778-5789.
3. Burns, R.G., and Law, A.D. (1970) Hydroxyl stretching frequencies in the infrared spectra of anthophyllite and gedrites. Nature, 226, 73-75.
4. Ghose, S. (1982) Mg-Fe order-disorder in ferromagnesian silicates: I. Crystal chemistry. In Advances in Physical Geochemistry, 2, 1-57.
5. 2: A new geothermometer. Earth and Planetary Science Letters, 16, 346-354.
6. 2. Zeitschrift für Kristallographie, 133, 301-326.
7. Hawthorne, F.C. (1983) Crystal chemistry of the amphiboles. Canadian Mineralogist, 21, 173-480.
8. Hirschmann, M., Evans, B.W., and Yang, H. (1994) Composition and temperature dependence of Fe-Mg ordering in cummingtonite-grunerite as determined by X-ray diffraction. American Mineralogist, 79, 862-877.
9. Hugh-Jones, D.A., Woodland, A.B., and Angel, R.J. (1994) The structure of high-pressure C2/c ferrosilite and the crystal chemistry of high-pressure C2/c pyroxenes. American Mineralogist, 79, 1032-1041.
10. 2+-Mg)-amphiboles. Fortschritte der Mineralogie, 66, 69-121.
11. Papike, J.J., Ross, M., and Clark, J.R. (1969) Crystal chemical characterization of clinoamphiboles based on five new structure refinements. Mineralogical Society of America Special Paper, 2, 117-137.
12. Papike, J.J., and Ross, M. (1970) Gedrites: Crystal structures and intracrystalline cation distributions. American Mineralogist, 55, 1945-1972.
13. 1/m to C2/m symmetry. Earth and Planetary Science Letters, 8, 448-450.
14. Robinson, K., Gibbs, G.V., and Ribbe, P.H. (1971) Quadratic elongation: A quantitative measure of distortion in coordination polyhedra. Science, 172, 567-570.
15. Ross, M., Papike, J.J., Shaw, K.W., and Weiblen, P.W. (1968) Exsolution in clinoamphiboles. Science, 159, 1099-1102.
16. Ross, M., Papike, J.J., and Shaw, K.W. (1969) Exsolution textures in amphiboles as indicators of subsolidus thermal histories. Mineralogical Society of America Special Paper, 2, 275-299.
17. Smyth, J.R. (1974) The high temperature crystal chemistry of clinohypersthene. American Mineralogist, 59, 1069-1082.
18. Sueno, S., Papike, J.J., Prewitt, C.T., and Brown, G.E. (1972) Crystal chemistry of high Cummingtonite. Journal of Geophysical Research, 77, 5767-5777.
19. Sueno, S., Cameron, M., Papike, J.J., and Prewitt, C.T. (1973) The high temperature crystal chemistry of tremolite. American Mineralogist, 58, 649-664.
20. Sueno, S., Cameron, M., and Prewitt, C.T. (1976) Orthoferrosilite: High-temperature crystal chemistry. American Mineralogist, 61, 38-53.
21. Veblen, D.R. (1985) Non-classical pyriboles and polysomatic reactions in biopyriboles. In Mineralogical Society of America Reviews in Mineralogy, 9A, 189-236.
22. Wang, A., Dhamelincourt, P., and Turrell, G. (1988) Infrared and low-temperature micro-Raman spectra of the OH stretching vibrations in cummingtonite. Applied Spectroscopy, 42, 1451-1457.
23. 1/m. International Geology Review, 20, 1357-1362.
24. 1/m-C2/m transition in cummingtonite. American Mineralogist, 80, 916-922.