| 释义 |
thorianite
tho·ri·a·nite T0177850 (thôr′ē-ə-nīt′)n. A highly radioactive blackish, greenish, or yellow mineral, ThO2, isomorphous with uraninite.
[thoria + -an + -ite.]thorianite (ˈθɔːrɪəˌnaɪt) n (Minerals) a rare black mineral consisting of thorium and uranium oxides. Formula: ThO2.U3O8tho•ri•a•nite (ˈθɔr i əˌnaɪt, ˈθoʊr-)
n. a rare, black, radioactive mineral, mainly thoria, ThO2, usu. found mixed with uranium, dioxide, and rare-earth metals: a minor source of thorium. [1900–05; thorian (thori (a) + -an2) + -ite1] thorianite
thorianite[′thȯr·ē·ə‚nīt] (mineralogy) ThO2 A radioactive mineral that crystallizes in the isometric system, occurs in worn cubic crystals, is brownish black to reddish brown in color, and has resinous luster; hardness is 7 on the Mohs scale, and specific gravity is 9.7-9.8. |