緑りょく閃せん石せき

noun

actinolite

A greenish amphibole mineral; a technical term used in geology and mineralogy.

• 緑りょく閃せん石せきは変へん成せい岩がんによく見みられる鉱こう物ぶつです。

  Actinolite is a mineral commonly found in metamorphic rocks.