A STUDY OF SOLID-SOLID PHASE EQUILIBRIUM BOUNDARIES AT HIGH PRESSURES AND TEMPERATURES,
Abstract
The results of investigations in the systems quartz-coesite (SiO2), calcite-aragonite (CaCo3), coesite-stishovite (SiO2), and pyrite-marcasite (FeS2) are summarized. New data in these systemude a point on the quartz-coesite equilibrium curve at 350 C, the complete equilib rium curve for calcite-aragonite equilibrium with the exception of one point at 575 C which was redetermined, stishovite synthesis from coesite at 300 C, and marcasite breakdown to pyrite as a function of pressure and temperature. The main purpose of the investigation was to determine phase relations in the system Al2SiO5. The results of this investigation are summarized in the phase diagram. New data include reactions in this system at low temperatures and pressures. The results are in agreement with the previous results at higher temperatures and pressures of Clark (Amer. J. Sci., 259, 651-68, 1961) with sillimanite-kyanite equilibrium. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 30, 1963
- Accession Number
- AD0418014
Entities
People
- Peter M. Bell
Organizations
- Harvard University