Winchite from Mt. Hiei contact aureole, Kyoto, Japan

Takao Hirajima, Daisuke Nakamura, Katsushi Shirahata

Research output: Contribution to journalArticle

Abstract

Sodic-calcic amphibole closely associated with aegirine-augite was newly found from a sandy hornfels at Mt. Hiei contact aureole, Kyoto, Japan. The amphibole shows a pleochroism of X=colorless, Y=blue and Z=light blue and is winchite with significant amounts of TiO2 (1.5-2.5 wt.%) and of Mg-Fe-Mn-Li amphibole component at B site (ca. 0.1-0.4 cations for O=23 basis). The chemical composition and the coexisting phases of the winchite in this study are similar to those in the alkaline igneous complex.

Original languageEnglish
Pages (from-to)107-112
Number of pages6
JournalJournal of Mineralogical and Petrological Sciences
Volume95
Issue number6
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Geophysics
  • Geology

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