Obsidian ochre, the most valuable member of the dark ochre family, was only first discovered a decade ago. The sleek black surface of this ore managed to reflect scanning waves, making obsidian ochre asteroids almost invisible. Advances in scanning technology revealed these beauties at last.

Considered a worthless ore for years, dark ochre was ignored by most miners until improved reprocessing techniques managed to extract the huge amount of isogen inside it. Dark ochre also contains useful amounts of tritanium and nocxium.

This ore is a compressed and much more dense version of the original ore.