The Akatani iron mine is situated in the western border of Iide mountainland. In the mine, the massive micaceous hematite deposits of hydrothermal replacement type are found mainly in the Paleozoic limestone, sometimes in liparite mass of the Neogene age. The deposits are considered to have been genetically related to the eruption of the liparite, being structurally controlled by the shape of liparite masses. The Bawarizawa "Shu" deposit, the largest in the mine, is developed in the limestone immediately below the lava of liparite and extends downward to the limestone in the immediate vicinity of the intrusive contact surfaces of the liparite dyke on both sides, which is connected to the upper lava flow.
The ore-shoot tends to occur at the depressed area, the "U shaped" part of the liparite against limestone.