Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published March 1968 | public
Journal Article

The quartz-coesite transition measured in the presence of a silicate liquid and calibration of piston-cylinder apparatus

Abstract

Hydrothermal melting reactions in the system NaAlSiO_4-SiO_2-H_2O have been extended into the coesite stability field using piston-cylinder apparatus, and the quartz-coesite transition has been bracketed at 735° (28.0±0.9 Kb) and at 800° C (28.15±0.9 Kb) in the presence of a silicate liquid phase; this provided favorable kinetic conditions. The results agree closely with previous piston-cylinder determinations employing a correction for pressure loss due to friction. Consideration of previous calibration and hysteresis experiments leads to the conclusion that despite its potential utility, the quartz-coesite transition can not be confidently used as a calibrant for piston-cylinder apparatus until the question of whether or not to apply a friction correction has been resolved.

Additional Information

© 1968 Springer International Publishing AG. This work was supported by NSF Grant GP-4910, using apparatus supplied by ARPA Contract SD-89.

Additional details

Created:
August 23, 2023
Modified:
October 17, 2023