Crystallization process of chalcedony and agate in Japan

DOI

Bibliographic Information

Other Title
  • 国内産玉髄・瑪瑙の形成過程

Description

We discuss about precipitation processes of chalcedony and agate precipitation on the basis of textures and occurrence. Textures of chalcedony and agate are grouped to four types, the variation of texture is caused by replacement processes after opal-A, opal-CT and silica polymorphs. In our observations of fine texture, there has been no evidence that chalcedony direct precipitates from solution.  Most chalcedony and agate from Japan were produced by replacing opal-CT and opal-A, and textures of chalcedony and agate are pseudomorphs after these phases.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390845713059288064
  • NII Article ID
    130007617512
  • DOI
    10.14824/jakoka.2014.0_33
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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