{
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  "density": 0.2,
  "max_height": 110,
  "min_height": 40,
  "dimension_filter": ["is_nether"],

  "generator": {
    "type": "ellipsoid",
    "radius": [18, 18]
  },
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    "value": {
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        {
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          "value": "ore:nether_quartz"
        }
      ]
    }
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}