Gneiss is a popular ore type because it holds significant volumes of three heavily used minerals, increasing its utility value. It has quite a bit of Mexallon as well as some Pyerite and Isogen. This material is compressed and a much more compact form of the original material.

Gneiss is often the first major league ore that up and coming miners graduate to. Finding the more expensive variation of Gneiss, called Iridescent Gneiss, is a major coup for these miners due to its 5% greater mineral yield. Gneiss is a popular ore type because it holds significant volumes of three heavily used minerals, increasing its utility value. It has quite a bit of Mexallon as well as some Pyerite and Isogen. This material is compressed and a much more compact form of the original material.