島根県大田市朝倉ベントナイト
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概要
- 論文の詳細を見る
The bentonites in the present area are altered products of rhyolitic tuff, which is a member of marine formation of the Miocene. They consist principally of montmorillonite associated with cristobalite, quartz, feldspar and mordenite as identified by X-ray diffraction, differential thermal analysis and thermobalance, and chemically belong to the calcium-rich type.
- 社団法人 東京地学協会の論文