Study on Zonal Distribution of Ore Deposits in Kamioka Mine

Abstract

Recent developement of the mine and geological studies had disclosed the Mo, Cu Zn and ZnPbzone in pyrometasomatic lead and zinc deposits. Existence of cryptobatholith is presumed in the Mo-zone from the occurence of acidic igneous intrusives, which is considered as a source of mineralizing solutioa.
Decrepitation temperatures of hedenbergite and ratio of Ag. Pb. Zn (main ore of the mine) show several local centers of mineralization and the direction of flow of mieralizing solution, which suggest the extention and chnge of ore bodies.