It should be reported here about the pseudo-hypersthene and honeycombed clinopyroxene found in the basalt lava from Saga Prefecture, northern Kyushu. The results of the petrological study of these minrals are summarrized in the following studies, that is to say, both the relict orthopyroxene in the central part of pseudohypersthene and honeycombed clinopyroxene are as xenocryst. Namely, the orthopyroxene in this pseudo-hypersthene and honeycombed clinopyroxene may be considered to have been crystallized under the plutonic condition than the volcanic condition, and to have originally constituted gabbroic rock or basic nodule
