au·tun·ite /oˈtʌˌnaɪt, ˈɔtṇ-/ 鈣鈾雲母
Au·tun·ite n. Min. A lemon-yellow phosphate of uranium and calcium occurring in tabular crystals with basal cleavage, and in micalike scales. H., 2-2.5. Sp. gr., 3.05-3.19. ◄ ►