noun
chalcophyllite
A rare copper aluminum sulfate arsenate mineral. Technical term used in mineralogy.
雲母銅鉱は銅の二次鉱物として産出する。
Chalcophyllite occurs as a secondary copper mineral.
The name 雲母銅鉱 is composed of 雲母 (mica), 銅 (copper), and 鉱 (ore/mineral), reflecting its appearance and composition. The exact historical derivation is uncertain.