Mineralogical characterization of natural zeolites from Tsuyazaki Peninsula, Fukuoka Prefecture, Japan

Abstract

The purpose of this study is to elucidate the mineralogical characterizations of natural zeolites from Tsuyazaki Peninsula on the bases of Nakamuta(1976) and Ueno & Hanada(1982). We surveyed No.III-subformation, No.IIA-partlayer and No.IC-partlayer in the Tsuyazaki-group. Firstly, by stereoscopic-microscope we observed those minerals and made mineral-separations, secondary by XRD we identified, and finally by scanning-electron-microscope we observed crystal-forms and surface-structures. As the results, we confirmed leonhardite-laumontite in the No.III-subformation, heulandite-clinoptilolite in the No.IIA-partlayer and stilbite in the cementing materials of conglomerates in the No.IC-partlayer.