{
    "feature": {
      "type": "minecraft:netherrack_replace_blobs",
      "config": {
        "radius": {
          "type": "minecraft:uniform",
          "value": {
            "min_inclusive": 4,
            "max_inclusive": 8
          }
        },
        "state": {
          "Name": "quark:jasper"
        },
        "target": {
          "Name": "minecraft:deepslate"
        }
      }
    },
    "placement": [
      {
        "type": "minecraft:count",
        "count": {
          "type": "minecraft:weighted_list",
          "distribution": [
            {
              "data": 33,
              "weight": 1
            }
          ]
        }
      },
      {
        "type": "minecraft:in_square"
      },
      {
        "type": "minecraft:height_range",
        "height": {
        "type": "minecraft:uniform",
        "min_inclusive": {
          "above_bottom": 120
        },
        "max_inclusive": {
          "absolute": 280
        }
      }
      },
      {
        "type": "minecraft:biome"
      }
    ]
  }