絹きぬ雲うん母も

noun

sericite

A fine-grained variety of muscovite mica, typically formed by hydrothermal alteration. Used in mineralogy and geology.

• 絹きぬ雲うん母もは熱ねっ水すい変へん質しつ作さ用ようで生せい成せいされることが多おおい。

  Sericite is often formed by hydrothermal alteration.