of rocks very mafic
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AnswerCrossword Clue
ultramaficof rocks, very mafic
ultramaficRelating to or denoting igneous rocks composed chiefly of mafic minerals
biotitesvery common mineral of the mica group, occurring in black, dark-brown, or dark-green sheets and flakes: an important constituent of igneous and metamorphic rocks
biotitevery common mineral of the mica group, occurring in black, dark-brown, or dark-green sheets and flakes: an important constituent of igneous and metamorphic rocks
pyroxeneany of a very common group of minerals of many varieties, silicates of magnesium, iron, calcium, and other elements, occurring as important constituents of many kinds of rocks, esp. basic igneous rocks