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New accurate elastic parameters for the forsterite-fayalite solid solution.
- Source :
-
American Mineralogist . Nov2011, Vol. 96 Issue 11, p1742-1747. 6p. - Publication Year :
- 2011
-
Abstract
- Three natural olivines with Fo80Fa20, Fo71Fa29, and Fo62Fa38 compositions were investigated in situ at high pressure by single-crystal X-ray diffraction using a diamond-anvil cell up to ~8 GPa at room temperature. The bulk modulus, KT0, and its first pressure derivative, K', do not show any significant variation among the compositions investigated and, using the data on a further sample with Fo92Fa8 composition recently investigated in the same laboratory and using the same experimental technique, we obtain, for the first time, a single equation of state for the entire Fo92Fa8-Fo62Fa38 compositional range. The equation has the following coefficients: KT0 = 124.7(9) GPa and K' = 5.3(3) and can be used for thermodynamic calculations involving the most common mantle olivine compositions. [ABSTRACT FROM AUTHOR]
- Subjects :
- *OLIVINE
*MOLECULAR structure
*DIAMONDS
*X-ray diffraction
*THERMODYNAMICS research
Subjects
Details
- Language :
- English
- ISSN :
- 0003004X
- Volume :
- 96
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- American Mineralogist
- Publication Type :
- Academic Journal
- Accession number :
- 69861034
- Full Text :
- https://doi.org/10.2138/am.2011.3829