autunite
noun
au·tun·ite ō-ˈtə-ˌnīt 
ˈȯ-tə-
ˈȯ-tə- : a radioactive usually lemon-yellow calcium phosphate mineral that occurs in tabular crystals and in scales and that is an ore of uranium
Word History
Etymology
Autun, town in France
First Known Use
circa 1852, in the meaning defined above