Nuragheite is a rare natural thorium molybdate, formula Th(MoO<sub>4</sub>)<sub>2</sub>÷H<sub>2</sub>O, discovered in Su Seinargiu, Sarroch, Cagliari, Sardegna, Italy. This locality is also a place of discovery of the other thorium molybdate - ichnusaite, which is a trihydrate.
Nuragheite is a part of molybdenum-bismuth mineralization. It coexists with ichnusaite, muscovite, and xenotime-(Y).
Nuragheite is chemically pure.
The crystal structure of nuragheite is composed of (100) layers with <sup>IX</sup>Th-centered polyhedra and Mo-centered tetrahedra. It is thus similar to that of ichnusaite.