noun
stromeyerite
A silver copper sulfide mineral; technical term used in geology and mineralogy.
輝銀銅鉱は銀と銅の硫化鉱物である。
Stromeyerite is a sulfide mineral of silver and copper.
The kanji 輝 (bright), 銀 (silver), 銅 (copper), and 鉱 (ore) describe the mineral's composition and appearance. The reading is on'yomi-based.