Volatilization of alkali metals from the heated Murchison (CM2) meteorite

• Shimaoka Taro K.

  Department of Science of Material Differentiation, Graduate School of Science and Technology, Kobe University

• Miyano Nobuo

  Department of Earth Sciences, Faculty of Science, Kobe University

• Baba Toshiyuki

  Department of Earth Sciences, Faculty of Science, Kobe University

• Yamamoto Koshi

  Department of Earth Sciences, Faculty of Science, Kobe University

• Nakamura Noboru

  Department of Science of Material Differentiation, Graduate School of Science and Technology, Kobe University

Abstract

In order to examine volatilization processes of alkali metals at high temperature, heating experiments were carried out using a starting material prepared from Murchison (CM2) (grain-size : ∿10μm) at temperatures of 1200-1400℃ under a constant pressure of 8×10^<-6> Torr, and heating duration up to 80min. Analyses of alkalis (Na, K, Rb), major and minor elements and petrographic examinations were performed for run products. Results show that fractional volatilization of alkali metals occurred during heating. It is suggested that the volatilization rates of alkali metals are influenced by the chemical composition of partial melt.

Journal

• Proceedings of the NIPR Symposium on Antarctic Meteorites

  Proceedings of the NIPR Symposium on Antarctic Meteorites 7 164-177, 1994-03

  National Institute of Polar Research

Details

• CRID: 1572261551713574912
• NII Article ID: 110000030005
• NII Book ID: AA10784627
• ISSN: 09145621
• Text Lang: en
• Data Source:
  • CiNii Articles