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In search of the mixed derivative ∂ 2 M/∂P∂T (M = G, K): joint analysis of ultrasonic data for polycrystalline pyrope from gas- and solid-medium apparatus

Gwanmesia, G D; Jackson, Ian; Liebermann, Robert


Elastic wave velocities for dense (99.8% of theoretical density) isotropic polycrystalline specimens of synthetic pyrope Mg3 Al2Si3O12) were measured to 1,000 K at 300 MPa by the phase comparison method of ultrasonic interferometry in an internally heated gas-medium apparatus. The temperature derivatives of the elastic moduli [(∂Ks/∂T)P = -19.3(4); (∂G/∂T)P = -10.4(2) MPa K-1] measured in this study are consistent with previous acoustic measurements on both synthetic polycrystalline pyrope in a...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Physics and Chemistry of Minerals
DOI: 10.1007/s00269-006-0130-x


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