Overview of all deposits
The Sea Level of Vintagecraft is at y=128
That means an ore spawning 10 blocks below Sealevel will be found at y=118
An ore spawning 10 blocks below Surface follows the heights of the map. So if you stand on a mountain with y=220 that ore would be at y=210
Please note, all ore blocks depicted here are in granite. They of course spawn in other rocks as well.