Kernite is a fairly common ore type that yields a large amount of mexallon. Besides mexallon the kernite also has a bit of tritanium and isogen. This ore is a compressed and much more dense version of the original ore.

Prophets tell of the mystical nature endowed in luminous kernite, the II-Grade kernite variant. To the rest of us, it's an average looking ore that has 5% more yield than normal kernite and can make you rich if you mine it 24/7 and live to be very old. Kernite is a fairly common ore type that yields fair amounts of Mexallon and Isogen. This material is compressed and a much more compact form of the original material.