車しゃ骨こつ鉱こうMeanings1nounbournonite; cogwheel oreA sulfosalt mineral (PbCuSbS₃) with a distinctive cogwheel crystal habit. Technical term used in mineralogy and geology.車しゃ骨こつ鉱こうは鉛なまりと銅どうの重じゅう要ような鉱こう石せき鉱こう物ぶつの一ひとつです。Bournonite is one of the important ore minerals of lead and copper.