@article{oai:ir.kagoshima-u.ac.jp:00010548, author = {島田, 欣二 and SHIMADA, Kinji and 福重, 安雄 and FUKUSHIGE, Yasuo}, journal = {鹿児島大学工学部研究報告, The research reports of the Faculty of Engineering, Kagoshima University}, month = {Sep}, note = {The object of this Paper is to describe the results of the writers' work on the fundamental properties of two kinds of white clays, namely those produced at Hogano and Arahira in Okuchi City. Granding analysis, chemical analysis, various thermal tests, X-ray analysis, electron microscopic survey etc. were conducted on these clays, with the results as follow. (1)It is very likely that the main component mineral of these clays is hydrohalloysite. Okuchi clay appears as a rounded granule without any linear outline under the electron microscope. (2)Okuchi clay is so fine grained that 80-90% of component minerals are less than 5μ in diameter. Okuchi clay is suitable for the paper sizing and coating because of fine grained particles and whiteness.}, pages = {69--77}, title = {大口粘土の基礎的研究}, volume = {5}, year = {1965} }