{
  "weight": 80,
  "density": 0.4,
  "max_height": 30,
  "min_height": 10,
  "dimension_filter": ["is_nether"],
  "surface_stone_material": "copper",

  "generator": {
    "type": "ellipsoid",
    "radius": [12, 12]
  },
  "filler": {
    "type": "simple",
    "value": {
      "type": "weight_random",
      "values": [
        {
          "weight": 30,
          "value": "ore:chalcopyrite"
        },
		{
          "weight": 30,
          "value": "ore:iron"
        },
		{
          "weight": 30,
          "value": "ore:pyrite"
        },
		{
          "weight": 10,
          "value": "ore:copper"
        }
      ]
    }
  }
}