抄録
Palygorskite was found as a clay vein in the Futamata area in northeastern Hokkaido, Japan. A light yellowish pink palygorskite vein was observed within a vertical joint in conglomerate of the Upper Eocene-Lower Oligocene Rikubetsu Formation in the Futamata landslide area. The palygorskite is considered to have crystallized from a low-temperature hydrothermal solution related to the volcanic activity of the Lower Oligocene Futamata Andesites.
