High-pressure transformations in CaSiO3

✍ Scribed by Eric Essene

• Book ID: 104748734
• Publisher: Springer
• Year: 1974
• Tongue: English
• Weight: 253 KB
• Volume: 45
• Category: Article
• ISSN: 0010-7999
• DOI: 10.1007/bf00383442

✦ Synopsis

Wollastonite transforms to a triclinic high-pressure polymorph, wollastonite II, at pressures >25kb. The equilibrium boundary [P(bars)=--4.7 • T~ has a rather flat negative P--T slope. The rapid reactivity of the transition over at least a 1000 ~ C range, its insensitivity to T and its location around 30 kb are indicative of its potential for a pressure calibration curve at high T.