Dictionary/鉱石こうせきKousekiOther forms: 礦石鉱石 (Kouseki) is a Japanese noun meaning “ore, mineral, crystal”.Meaningsnounore; mineral; crystalKanji in 鉱石鉱mineral石stoneRelated words流石as one would expect石stone石koku宝石gem石油oil炭鉱coal mine石橋stone bridge石炭coal化石fossil石神stone which is worshipped石垣stone wall一石二鳥killing two birds with one stone