Antozonite is a rare mineral that has limited synonyms. It is also known as thorium ozone, thorium trioxide, and thorium(IV) oxide. The mineral is an oxide of thorium that forms green or yellowish-brown crystals. Antozonite is found in hydrothermal veins, granites, and alkaline igneous rocks. The mineral is mainly used in nuclear reactors, as thorium is a resource that could provide an alternative energy source to fossil fuels. However, due to the limited availability of antozonite, commercial use of this mineral is limited. Thorium oxide and thorium trioxide are common chemical synonyms of antozonite.