n. 粗粒玄武岩, 辉绿岩

[化] 粗玄岩; 煌绿岩

Dolerite \Dol"er*ite\, n. [Gr. dolero`s deceptive, because it
was easily confounded with diorite.] (Petrography)
(a) A dark, crystalline, igneous rock, chiefly pyroxene with
labradorite.
(b) Coarse-grained basalt.
(c) Diabase.
(d) Any dark, igneous rock composed chiefly of silicates of
iron and magnesium with some feldspar. -- {Dol`er*it"ic},
a.
[Webster 1913 Suppl.]