noun
wavellite; brazilianite
Geological term for a phosphate mineral; wavellite is the more common referent, but the term can also refer to brazilianite in some contexts.
銀星石はリン酸塩鉱物の一種で、放射状の結晶が特徴的だ。
Wavellite is a type of phosphate mineral, characterized by its radial crystal formations.
The name 銀星石 (literally 'silver star stone') likely derives from the mineral's appearance, but the exact historical derivation is uncertain.