CRYSTAL STRUCTURE OF DEHYDROXYLATED 2M1 SERICITE AND ITS RELATIONSHIP WITH MIXED-LAYER MICA/SMECTITE

KATSUTOSHI TOMITA; KOICHI SHIRAKI; MOTOHARU KAWANO

doi:10.11362/jcssjclayscience1960.10.423

CRYSTAL STRUCTURE OF DEHYDROXYLATED 2M₁ SERICITE AND ITS RELATIONSHIP WITH MIXED-LAYER MICA/SMECTITE

KATSUTOSHI TOMITA, KOICHI SHIRAKI, MOTOHARU KAWANO

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Keywords: Dehydroxylated 2M₁ sericite, Crystal structure, Rietveld method, Regularly interstratified mica/smectite, Formation of interstratified mica/smectite

JOURNAL FREE ACCESS

1998 Volume 10 Issue 5 Pages 423-441

DOI https://doi.org/10.11362/jcssjclayscience1960.10.423

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Abstract

Crystal structure of dehydroxylated 2M₁ sericite from Goto mine, Nagasaki Prefecture, Japan was investigated, and was compared with the crystal structure of unheated 2M₁ sericite. The crystal structure of the dehydroxylated 2M₁ sericite showed different site cation occupancies in interlayers. Density distribution in interlayers showed alternating different densities. It was confirmed that the formation of regularly interstratified mica/smectite from the dehydroxylated 2M₁ sericite is attributed to the crystal structure of dehydroxylated 2M₁ sericite.

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