Ore Distribution Scanner
Stop guessing which Y level to strip-mine. Scan the terrain you have already got, then look any ore up in JEI, EMI or REI and read its real depth distribution for your world, your seed and your modpack.
Depth Graph
Iron Ore in JEI after a scan of 211 chunks: average ores per chunk at every Y level, with the hovered layer at Y 13 showing 1.70 per chunk and 359 found.
One Biome
The same ore in Dark Forest alone, from the 121 chunks sampled there; the arrows step through every biome the scan found.
Biome Arrows
Hovering an arrow says what it does: the right one shows the next biome's distribution.
Nothing Scanned Yet
A dimension with no scan yet says so and offers the /ods scan command.
Scan Command
/ods scan reports in chat when it starts, with the dimension, radius and number of ores it is looking for.
Peak Depth List
/ods list minecraft:overworld prints every scanned ore with the Y level where it is most common.
Ore Info
/ods info minecraft:iron_ore prints the peak and secondary peak, the top biomes and the total found, also from a server console.
Settings Screen
Every setting can be changed in game, from Mod Menu on Fabric and the Config button in the mod list on Forge and NeoForge.