豊とよ羽は鉱こうMeanings1nountoyohaitegeologyA rare mineral; technical term used in geology.豊とよ羽は鉱こうは北ほっ海かい道どうの豊とよ羽は鉱こう山ざんで発はっ見けんされた。Toyohaite was discovered at the Toyoha mine in Hokkaido.