秋田懸横手町附近の合沸石破璃質凝灰岩の鑛物組成
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概要
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The mineralogical composition of a tuff which has strong adsorptive power is described., This tuff is composed mainly of glass fragments altered to the Clay mineral, montmorillonite, and the interspaces of the altered glass fragments are filled by opal, zeolite crystal aggregate and very transparent glass fragments., The mineralogical composition was determined by optical properties, chemical analyses, X-ray powder pattern and thermal properties., The zeolite crystal aggregate and very transparent glass fragments and opal may have been produced by secondary alteration by hydrothermal action., The adsorptive power and the base exchabnge capacity shown by the rock may be due to the existence of zeolite crystal and montmorillonite.,
- 日本地質学会の論文
- 1950-05-25