Ion Cube (Below Zero)

Ion Cubes are a type of synthetic crystal created by the Almanac. They can contain massive amounts of energy equivalent to a 'small nuclear detonation' in a stable state. Ion Cubes are used to power certain Almanac devices. They can be used to craft Alien Tablets, as well as powerful Ion Batteries and Ion Power Cells. Ion Cubes are also the only power source of the Tether Tool.

Currently, Ion Cubes can only be found within Sanctuary Zero and next to Almanac Artifacts in the Arctic Kelp Caves.