閃せん緑りょく岩がん

noun

diorite

A coarse-grained intrusive igneous rock, intermediate in composition between granite and gabbro. Used in geology and petrology.

• 閃せん緑りょく岩がんは建けん築ちく材ざい料りょうとして使つかわれることがある。

  Diorite is sometimes used as a building material.