Accession Number : AD0637467

Title :   PRESSURE-TEMPERATURE DIAGRAM OF PART OF THE SIO2-H2O SYSTEM.

Descriptive Note : Research Translation.

Corporate Author : AMERICAN METEOROLOGICAL SOCIETY BOSTON MASS

Personal Author(s) : Ostrovskii,I. A. ; Mishina,G. P. ; Povilaitis,V. M.

Report Date : JUN 1966

Pagination or Media Count : 11

Abstract : The PT-projection of the high temperature part of the system SiO2-H2O is based on experimental data. The results agree with the theoretically possible scheme of combination of stable and unstable invariant points in a n = -1 multisystem according to Korzhinskii. In case of low water concentration, quartz, as a stable phase, may coexist with the melt at temperatures above 1300C. Cristobalite and tridymite are unstable at pressures higher than about 2500 atm. (Author)

Descriptors :   (*MINERALS, *PHASE STUDIES), (*SILICATES, PHASE STUDIES), (*SILICON COMPOUNDS, PHASE STUDIES), ROCK, PRESSURE, TEMPERATURE, WATER, QUARTZ, DIOXIDES, USSR

Subject Categories : Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE