Tungstite is a hydrous tungsten oxide mineral with formula: WO3·H2O.

It crystallizes in the orthorhombic system in translucent yellow to yellow green masses.

It is clay-like with Mohs hardness of 2.5 and a specific gravity of 5.5.

It was first described in 1868 for an occurrence near Trumbull, Connecticut at the Hubbard Tungsten Mine at Long Hill.

This article about a specific oxide mineral is a stub.