The other day while using the Direwolf20 pack (the new one for 1.5+) I was strip mining at about lava lake level when I came across two very interesting ore nodes, one made of glow stone and one made of end stone (which had and oblivion hive in it but that is beside the point), I found this interesting and was curious as to which mod(s) allowed this to happen and what other ore types would spawn because of it (for example netherrack) does anyone know? I could not find any place offering discussion on the matter.