粗そ粒りゅう玄げん武ぶ岩がん

noun

dolerite; diabase

A medium-grained basic igneous rock, equivalent to dolerite or diabase in English. Used in geology.

• 粗そ粒りゅう玄げん武ぶ岩がんは、玄げん武ぶ岩がんよりもやや粗あらい結けっ晶しょうを持もつ岩がん石せきです。

  Dolerite is a rock with slightly coarser crystals than basalt.