diabase

[ˈdaɪ.ə.beɪs]

diabase Definition

a dark, fine-grained igneous rock that is composed mostly of pyroxene and feldspar.

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Summary: diabase in Brief

The term 'diabase' [ˈdaɪ.ə.beɪs] refers to a dark, fine-grained igneous rock composed mainly of pyroxene and feldspar.