{
  "oreConfig": [
    {
      "ore": "minecraft:coal_ore",
      "filler": "minecraft:stone",
      "minY": 1,
      "maxY": 128,
      "maxVeinSize": 16,
      "spawnRate": 20.0,
      "biomeBlacklist": [],
      "biomeWhitelist": []
    }
  ]
}