noun🔗Share铁镁质岩 A rock with such properties."The dark, heavy basalt was clearly a mafic. "那种颜色深沉、质地沉重的玄武岩，显然是一种铁镁质岩。geologymaterialmineralChat with AIVocabulary GamePractice Reading
adjective🔗Share铁镁质，镁铁质 Describing rocks, such as silicate minerals, magmas, and volcanic and intrusive igneous rocks, which contain relatively high concentrations of magnesium and iron."The dark, heavy basalt rock is a good example of a mafic rock. "这种颜色深、密度大的玄武岩是铁镁质岩石的一个很好的例子。geologymaterialmineralscienceChat with AIVocabulary GamePractice Reading
