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Published April 2002 | public
Journal Article

Elasticity and equation of state of orthoenstatite, MgSiO_3

Abstract

Published measurements of the compression and elasticity of MgSiO_3 orthoenstatite have been reanalyzed and the estimates that they yield of the room pressure bulk modulus and its pressure derivative are now shown to be consistent with one another. New single-crystal compression data is also consistent with the revised EoS parameters. Combining the results of four different experiments (two compression, one Brillouin measurement, and one in situ high-pressure ultrasonic measurement) yields best estimates of K_(T0) = 105.8(5) GPa and K'_0 = 8.5(3) for a third-order Birch-Murnaghan EoS.

Additional Information

© 2002 Mineralogical Society of America. Manuscript Received July 17, 2001; Manuscript Accepted December 13, 2001. The X-ray diffraction experiments described in this paper were performed at the Bayerisches Geoinstitut, Bayreuth, on samples kindly provided by G. Rossman. The authors thank J. Bass and S. Sinogeikin for helpful discussions and D. Isaak and two anonymous reviewers for their careful reviews of the manuscript. Support for J.M. Jackson was provided by the N.S.F., under grant no. EAR0002021 to J.D. Bass.

Additional details

Created:
August 19, 2023
Modified:
October 24, 2023