鱗りん珪けい石せき

noun

tridymite

A high-temperature polymorph of silica (SiO₂), found in volcanic rocks. Technical term used in geology and mineralogy.

• 鱗りん珪けい石せきは火か山ざん岩がんの中なかに見みられる鉱こう物ぶつだ。

  Tridymite is a mineral found in volcanic rocks.