白雲母
also: はくうんも
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Meanings
1
muscovite; white mica
A common light-colored mica mineral. The gloss 'talc' is misleading; muscovite is a different mineral. In Japanese, 白雲母 refers specifically to muscovite, not talc (滑石).
Muscovite is a mineral commonly found in igneous and metamorphic rocks.
This rock contains a lot of muscovite.