抄録
Hypogene kaolin clay occurs in epithermal gold ore deposit of the Kasuga mine, as gangue mineral of vein and hydrothermal alteration product of wall rocks. They were examined under the microscope and by the X-ray powder method, and were also subjected to differential thermal analysis.
From the results of the studies, it is concluded that hypogene kaolin clay from the Kasuga mine is composed of nacrite, dickite and kaolinite. Some characteristic features in the occurrence of these minerals are described.
