Uraninite

**Chemical composition:** UO₂

**Hardness:** 5‒6

**Density:** 10.6 g/cm³

**Crystal system:** Cubic (Isometric)

**Luster:** Greasy

**Info:** Uraninite is the most important ore of uranium and radium. Formerly, it was manufactured for colours production and as a source of radium for therapeutic preparations. Now it is the energy of the fuel cell in nuclear power plants, military - nuclear warheads, and depleted uranium ammunition. Other uses can be found in medicine, biology, metallurgy and other fields.

## Keywords
mineral uraninite texture color ornamental stone semi-precious gemstone