紅こう柱ちゅう石せきこうちゅうせきじ字FuriganaMeanings1nounandalusitemineralogy›A mineral, an aluminum silicate, used in refractory materials and as a gemstone. Domain-specific term.紅こう柱ちゅう石せきは耐たい火か物ぶつの原げん料りょうとして
