Trolleite-augelite pseudomorphs supposed after berlinite from the Hinomaru-Nako mine, Yamaguchi Prefecture, western Japan.

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Description

Morphological and chemical studies on high quartz-like trigonal dipyramids from voids in a medium-grained massive augelite-trolleite-andalusite-quartz rock from pyrophyllite deposit of the Hinomaru-Nako mine, Abu-cho, Yamaguchi Prefecture, western Japan, suggest they are trolleite-augelite pseudomorphs after berlinite. The occurrence indicates that the formation of berlinite was of hydrothermal origin and took place after the precipitation of pyrite, or under lower temperature and pressure conditions. Also, the existence of trolleite as a pseudomorph in voids is interpreted as proof that its formation does not always require high-pressure metamorphic conditions.

Journal

  • Mineralogical Journal

    Mineralogical Journal 21 (4), 145-150, 1999

    Japan Association of Mineralogical Sciences

Keywords

Details 詳細情報について

  • CRID
    1390001206546082816
  • NII Article ID
    130004485202
  • DOI
    10.2465/minerj.21.145
  • ISSN
    18814174
    05442540
  • Text Lang
    en
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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