Evaluations and a revision of the pyroxene geothermometry

Hidemi Ishibashi, Takeshi Ikeda

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

This study evaluates the validity of several pyroxene geothermometers by comparing calculations with recent experimental studies that cover wide range of pressure and pyroxene composition. The most accurate thermometer for the multicomponent system among previously proposed models is that of Taylor (1998). This model yields temperatures ±32°C (1σ) for the multicomponent system, but provides temperatures lower than the experimental temperatures at low pressures in the CaO-MgO-SiO2 (CMS) system. We propose a revised model of Wells (1977)’s pyroxene thermometer as, where the equilibrium constant K is the same as that of Wood and Banno (1973). This yields temperatures±35°C (1σ) for the multicomponent system and ±21°C for the CMS system.

Original languageEnglish
Pages (from-to)186-194
Number of pages9
JournalJapanese Magazine of Mineralogical and Petrological Sciences
Volume34
Issue number4
DOIs
Publication statusPublished - Jan 1 2005

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Economic Geology

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