{
  "format_version": "1.13.0",
  "minecraft:ore_feature": {
    "description": {
      "identifier": "minecraft:tuff_feature"
    },
    "count": 64,
    "replace_rules": [
      {
        "places_block": {
          "name": "minecraft:tuff"
        },
        "may_replace": [
          {
            "name": "minecraft:stone"
          },
          {
            "name": "minecraft:deepslate"
          }
        ]
      }
    ]
  }
}