2024-03-29T07:59:45Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/367722022-11-17T02:08:08Zhdl_2115_35159hdl_2115_34816hdl_2115_116Study of the Structure Model of Todorokite1000070157436Miura, Hiroyukiopen access450The X-ray diffraction study of todorokite from Japan was carried out and appropriate structural model was calculated by Rietveld method. The calculation of the theoretical diffraction pattern was done for a layer structural model and the calculated results show that the layer model can explain the observed diffraction data. Some of the properties of todorokite such as superstructure or shrinkage of c-axis on heating can be explained by the layer model which contains random H2O between the [MnO6] layers.北海道大学Hokkaido University1991-07engdepartmental bulletin paperVoRhttp://hdl.handle.net/2115/367720018-3474北海道大学理学部紀要Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy2314151https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/36772/1/23-1_p41-51.pdfapplication/pdf3.91 MB1991-07