Dolerite
From BiblePortal Wikipedia
Dolerite [1]
(1): ( n.) A dark, crystalline, igneous rock, chiefly pyroxene with labradorite.
(2): ( n.) A dark-colored, basic, igneous rock, composed essentially of pyroxene and a triclinic feldspar with magnetic iron. By many authors it is considered equivalent to a coarse-grained basalt.
(3): ( n.) Any dark, igneous rock composed chiefly of silicates of iron and magnesium with some feldspar.
(4): ( n.) Diabase.
(5): ( n.) Coarse-grained basalt.
