Mineralogy of Kaolin Minerals and Its Relation to the Genesis of Sedimentary Kaolin Deposits around Nagoya

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  • カオリン鉱物の鉱物学における２，３の問題―とくに名古屋周辺の粘土鉱床に関連して
  • カオリン コウブツ ノ コウブツガク ニ オケル 2 3 ノ モンダイ トクニ
  • とくに名古屋周辺の粘土鉱床に関連して

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Abstract

Mineralogical problems concerned with the genesis of kaolin minerals in sedimentary kaolin deposits and related sediments around Nagoya are reviewed. The kaolin deposits are mainly composed of platy kaolinite, whereas the basement granite has been weath-ered mainly to long tubular halloysite. Pyroclastics intercalated with the kaolin deposits and the overlying sediments were altered into spheroidal halloysite or a mixture of spheroidal halloysite and platy kaolinite. The genesis of these different kaolin minerals is discussed with reference to the variation in degree of disorder of halloysite.

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