Clinoenstatite: High-Low Inversion
- 21 May 1965
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 148 (3673) , 1090-1091
- https://doi.org/10.1126/science.148.3673.1090
Abstract
Clinoenstatite undergoes a metastable displacive inversion at 995°C. The new phase can be indexed (from x-ray powder pattern) on a triclinic cell with dimensions a = 10.00 Å; b = 8.934 Å; c = 5.170 Å; alpha = 88.27°; beta = 70.03°; gamma = 91.09°. The new phase persists from 995° to 1010°C at the composition MgSiO3. For a solid solution (15 percent by weight) of diopside in clinoenstatite, the new phase persists from 995° to at least 1400°C and does not invert in periods of several hours to protoenstatite, the phase previously thought to be the stable form in this region.Keywords
This publication has 2 references indexed in Scilit:
- High-temperature x-ray studies on the polymorphism of MeSiO31Zeitschrift für Kristallographie, 1963
- High-Temperature X-Ray Diffraction Study of the Polymorphism of MgSiO3Journal of the American Ceramic Society, 1951