P3Y4R1O1X8E1N1E1S1
21 points
PYROXENES is validvalid
PYROXENE, any of a group of minerals common in igneous rocks [n]
PYROXENE, any of a group of minerals common in igneous rocks [n]
PYROXENE, any of a group of minerals common in igneous rocks [n]
PYROXENE, any of a group of minerals common in igneous rocks [n]