Scorpionite is a type of residue which can be found on certain types of ore. While it does not appear in-game, it is mentioned by Nurmof in a Postbag from the Hedge. Nurmof states that it is the reason scorpions are present in mining areas in many different locations and also why they are extremely aggressive. Apparently, scorpionite is considered delicious among scorpions, much like how dragons enjoy eating runite ore.