Jetshift/Raw Jelichor

Altunium is an ore that is only mineable in post-Moon Lord stages. It requires a pickaxe power of 225 or higher to be mined.

Generation
It generates in The Great Darkness as a giant stalactite.

Spread
Unlike the other tiles involved with The Great Darkness, Altunium will spread to nearby existing ores, however there must be a Great Darkness tile around the targeted ore. All ores converted to Altunium never revert, even after defeating Shift Final.

Mining
If players attempt to mine Altunium before Shift Final is defeated, the ore won't get destroyed and will spread to nearby blocks. Attempting to destroy Altunium with explosives will have no effect. After Shift Final has been defeated, Altunium can be mined freely.