|
|||||
|
|
Pressure–volume–temperature equation of state of andradite and grossular, by high-pressure and -temperature powder diffraction |
|
| Authors: | A Pavese V Diella V Pischedda M Merli R Bocchio M Mezouar |
| Institution: | Dipartimento di Scienze della Terra, Università degli Studi di Milano, 20133 Milano, Italy Tel.: +39-02-23698321; Fax: +39-02-70638681 e-mail: pavese@p8000.terra.unimi.it, IT National Research Council, Centro di studio per la geodinamica alpina e quaternaria, 20133 Milano, Italy, IT Dipartimento di Scienze Mineralogiche e Petrologiche, Università degli Studi di Torino, 10125 Torino, Italy, IT Dipartimento di Scienze della Terra, Università degli Studi di Pavia, 27100 Pavia, Italy, IT ESRF, 38043 Grenoble Cedex, France, FR |
| Abstract: | The thermoelastic parameters of natural andradite and grossular have been investigated by high-pressure and -temperature synchrotron X-ray powder diffraction, at ESRF, on the ID30 beamline. The P–V–T data have been fitted by Birch-Murnaghan-like EOSs, using both the approximated and the general form. We have obtained for andradite K 0=158.0(±1.5) GPa, (dK/dT )0=−0.020(3) GPa K−1 and α0=31.6(2) 10−6 K−1, and for grossular K 0=168.2(±1.7) GPa, (dK/dT)0=−0.016(3) GPa K−1 and α0=27.8(2) 10−6 K−1. Comparisons between the present issues and thermoelastic properties of garnets earlier determined are carried out. Received: 7 July 2000 / Accepted: 20 October 2000 |
| Keywords: | Andradite Grossular P V T EOS X-ray powder diffraction |
| 本文献已被 SpringerLink 等数据库收录！ | |