This mod adds a book to leveled lists, that once obtained, enables the player to see the location of mines around the province of Skyrim through adding their map markers to your map. This makes it much easier to locate them. The book features hints about the content of these mines as well.
Not a large mod, but I think it's helpful for people like me, too lazy to cover every square inch of Skyrim to find some ore.

Thanks to:
UESP Wiki
JustinOther

http://skyrim.nexusmods.com/mods/25289