Observation of serpentine texture from Mineoka belt, Boso Peninsula, Chiba Prefecture

Abstract

We study about serpetinites from Mineoka belt, Boso Peninsula, Chiba Prefecture. Serpentinites mainly onsist of mesh texture and bastite. Ni sulfides are often observed and a few awaruite and native copper are also observed. Values of (Ni+Fe)/S about Ni sulfides changes from 0.78 to 1.82. Perfectly serpentinized mesh texture consist of Fe-rich serpentine or magnetite.