名古屋市周辺の鮮新世粘土鉱床のカオリン鉱物について
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概要
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Clay minerals in Pliocene sediments and weathered granite underneath taken from clay deposits around Nagoya City were examined with special reference to the genesis of kaolin minerals. Following results were obtained. 1) In weathered granite, both platy-kaolinite and long tubular halloysite occur and the ratio of the kaolinte to the halloysite is variable. 2) In Pliocene arenaceous sediments, b-axis disordered kaolinite is a predominant clay mineral and tiny tubular halloysite is often found. In Pliocene argillaceous sediments, the chief clay mineral is kaolinite which is rarely accompanied by halloysite. Mineral transformation during weathering and diagenesis is discussed on the basis of these results.
- 1972-04-25