Occurrence of albite in the Amakusa pottery stone - Observation of thin section and polished section prepared by dry method -

Abstract

Amakusa pottery stone deposits are distributed in the Amakusa-Shimojima island, Kumamoto prefecture. Teikado-Toseki means pottery stone having lower refractoriness than the Seger Cone of SK20. XRD measurement indicates the existence of albite in it, but, albite has not been identified in the thin section until now. In order to observe the definite structure, we tried a new polishing technique; dry method. It revealed that albite has 50 micro meters in the mean size. This method is very effective for the observation on the clay rich samples.