I've waited almost 2 months in-game now and it won't come back. And for some reason I can't mine the Ebony in Redbelly mine, even after the spider quest. What's going on? I have left the mine, and even went to Whiterun and waited then came back, still no luck. --- Playing Skyrim
Maybe it's a mixture of in-game and real world time so it stops people power levelling smithing and means they have to work to get their levels up. I think that with the ore though you can see it in the rock before you can mine it. Well that happened to me and I just went back a few days later.
Power leveling smithing is much easier than mining Ebony. You buy iron ingots and leather straps from the 2 blacksmiths in Whiterun, make Iron Dagger and then sell them. Then you wait two days and they'll restock it and do it all over again. With about 15k, you can get 100 smithing from 20 in about 15-20 minutes. --- Playing Skyrim
I'm pretty sure it's just a glitch. Though you might just not have waited long enough. In the guide it says mines respawn months, not days, later. --- |h |e | n | t | a | i My Anti-Drug. Gamertag - tiamat89 PSN - XxTiamatxX / Official Mudcrab Battlemage Wielder of SoulSapper