Gneiss

Gneiss is a popular ore type because it holds a bit of many minerals, increasing its utility value. It has a little something of tritanium, mexallon, isogen and zydrine. It has a portion size of 400 ore units for refining.

m3: 5
Needed for refine: 400
Tritanium: 171
Mexallon: 171
Isogen: 343
Zydrine: 171