@article{oai:ir.kagoshima-u.ac.jp:00004504, author = {島田, 欣二 and SHIMADA, Kinji and 東, 秀子 and HIGASHI, Hideko}, 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 = {Chemical analyses of silicious rocks from Kuju (Oita prefecture) and Tokachi (Hokkaido) were carried out. Determination of specific gravity,various thermal tests,alkaline and acid solubility tests and X-ray tests were also performed. The alkaline and acid solubility tests,determination of specific gravity were made at various temperatures 200 to 1200°C. As the results,these rocks were found to be composed mainely of amorphous silica,some clay as well as quartz being accompanied withoccasionally.}, pages = {151--154}, title = {火山作用と関係ある無定形ケイ酸の性質とその応用的研究 : 第29報 九重および十勝産ケイ石の性質}, volume = {2}, year = {1962} }