thorianite
[ thawr-ee-uh-nahyt, thohr- ]
/ ˈθɔr i əˌnaɪt, ˈθoʊr- /
noun
a rare mineral, mainly thoria, ThO2, but also containing uranium, cerium, and other rare-earth metals, occurring in small, black, cubic crystals: notable for its radioactivity and used as a minor source of thorium.
Words nearby thorianite
thoreau,
thoreau, henry david,
thorez,
thorfinn karlsefni,
thoria,
thorianite,
thorite,
thorium,
thorium dioxide,
thorium series,
thorn
Example sentences from the Web for thorianite
The richest known source is thorianite, which consists mainly of thorium oxide, and contains 9.5 cc.
Much the best practical source of helium is thorianite, a mineral imported from Ceylon for the manufacture of thoria.
British Dictionary definitions for thorianite
thorianite
/ (ˈθɔːrɪəˌnaɪt) /
noun
a rare black mineral consisting of thorium and uranium oxides. Formula: ThO 2 .U 3 O 8