脂し肪ぼう光こう沢たく

noun

greasy luster; greasy shine

Geological term describing a mineral's surface that appears as if coated with a thin layer of oil or fat. Used in mineralogy and petrology.

• この鉱こう物ぶつは脂し肪ぼう光こう沢たくを示しめす。

  This mineral exhibits a greasy luster.