Pyralspite garnet from a low grade pelitic schist in the Sanbagawa metamorphics

Abstract

A pyralspite garnet from a sericite-chlorite-schist at Oyahana, Titibu, was analysed as shown in Table 3. It is mainly composed of spessartine and almandine molecules. The MnO content of the pyralspite, is as high as 18.03%, while that of the host rock is about 0.6%(Table2). Petrological problems related to the pyralspite are discussed.