Coal: Best at Y=96, can be found between Y=256 to Y=0.
Copper : Best at Y=48, can be found between Y=112 to Y=-16.
Iron : Best at Y=16 and Y=232, can be found between Y=256 to Y=-64.
Gold : Best at Y=-16, found between Y=32 to Y=-64.
Redstone : Best at Y=-59, found between Y=16 to Y=-64.
Lapis : Best at Y=0, found between Y=64 to Y=-64.
Diamond : Best at Y=-59, found between Y=16 to Y=-64.
Emeralds (Mountainous Biomes) : Best at Y=235, found between Y=256 to Y=-16.
Gold (Badlands) : Best between Y=32-256, found between Y=256 to Y=32.
Copper (Dripstone Caves): Best at Y=48, found between Y=112 to Y=-16.
