Idea: New glowing ore

Large caves need at least some dim lighting and I suggest making ore, which will be very common, but will be generated in small quantities. In the form of ore, the new light source must glow at level 6 or less for hostile mobs to continue spawning. After mining this ore, you can get a new item (insert the name of the item here) from several such items, you can get a new glowing block, but it will glow at level 6 or lower, so there are no free torches. Perhaps each type of cave needs its own special glow ore.