Euxenite contains calcium, niobium, tantalum, cerium, titanium, yttrium, and typically uranium and thorium with some other metals. The chemical formula is: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6. It is commonly partially amorphous due to radiation damage. It was first described in 1870 and named for From the Greek (εΰζευος), hospitable or friendly to strangers, in allusion to the many rare elements that it contains.
It occurs in granite pegmatites and detrital black sands.