It is intermediate in compositions between andesite and rhyolite, and, like andesite, it consists mostly of plagioclase feldspar with biotite, hornblende, and pyroxene (augite and/or enstatite).
It is intermediate in compositions between andesite and rhyolite. It consists mostly of plagioclase feldspar with biotite, hornblende, and pyroxene (augite and/or enstatite). This is like andesite.