{
  "weight": 20,
  "density": 0.5,
  "max_height": 40,
  "min_height": 5,
  "dimension_filter": ["name:*(overworld|lostcities)"],
  "generator": {
    "type": "ellipsoid",
    "radius": [13, 13]
  },
  "filler": {
    "type": "simple",
    "value": {
      "type": "weight_random",
      "values": [
        {
          "weight": 60,
          "value": "ore:graphite"
        },
        {
          "weight": 20,
          "value": "ore:diamond"
        },
		{
          "weight": 20,
          "value": "ore:coal"
        }
      ]
    }
  }
}