noun
micaceous hematite
A mineralogical term for a variety of hematite with a micaceous, flaky structure. Used in geology and mineralogy contexts.
この標本は雲母鉄鉱を含んでいる。
This specimen contains micaceous hematite.
Compound of 雲母 (unmo, 'mica') and 鉄鉱 (tekkō, 'iron ore'), referring to the mica-like appearance of this hematite variety.