{
    "type": "minecraft:disk",
    "config": {
      "state_provider": {
        "fallback": {
          "type": "minecraft:simple_state_provider",
          "state": {
            "Name": "minecraft:gray_terracotta"
          }
        },
        "rules": []
      },
      "target": {
        "type": "minecraft:matching_blocks",
        "blocks": [
          "minecraft:tuff","deepslate"
        ]
      },
      "radius": {
        "type": "minecraft:uniform",
          "min_inclusive": 6,
          "max_inclusive": 8
      },
      "half_height": 1
    }
  }
  