The phase diagram calcite-aragonite as derived from the crystallographic properties

✍ Scribed by E. Salje; K. Viswanathan

• Book ID: 104746207
• Publisher: Springer
• Year: 1976
• Tongue: English
• Weight: 612 KB
• Volume: 55
• Category: Article
• ISSN: 0010-7999
• DOI: 10.1007/bf00372754

✦ Synopsis

A general method to calculate phase diagrams from the fundamental crystallographic properties has been suggested, using the calcite-aragonite reaction as an example. This procedure requires the measurement of the phonon spectra at different temperatures and pressures, calculation of a reasonable Griineisen parameter to obtain Cp values from the C~ values and the consideration of the order-disorder phenomena and its contribution to the Gibb's energy. The remarkable agreement seen between the calculated diagram and that determined experimentally speaks for the reliability of this method.