輝き鉄てっ鉱こう

noun

specular iron; specularite

A mineralogical term for a variety of hematite with a shiny, mirror-like surface. Used in geology and mineralogy contexts.

• 輝き鉄てっ鉱こうは鏡かがみのような光こう沢たくを持もつ鉱こう物ぶつです。

  Specular iron is a mineral with a mirror-like luster.