精矿

精矿	jīng kuàng	refined ore / concentrate
精	jīng	essence / extract / vitality / energy / semen / sperm / mythical goblin spirit / highly perfected / elite / the pick of sth / proficient (refined ability) / extremely (fine) / selected rice (archaic)
矿	kuàng	mineral deposit; ore deposit / ore / a mine
矿	kuàng	variant of 矿