III-Grade or vitreous mercoxit gleams in the dark like a siren of myth. Found only in rare clusters in space vitreous mercoxit is very rare, but very valuable, due to its much higher 10% yield. Mercoxit is a very dense ore that must be mined using specialized deep core mining techniques. It contains massive amounts of the extraordinary Morphite mineral. This material was compressed using an older process that compressed batches of raw materials into units using a set input quantity. Newer compression technology uses a more flexible one-to-one unit compression system.