zinc gen.json

"rc_zinc": {
    "distribution": "uniform",
    "generator": {
        "block": {
            "name": "railcraft:ore_metal",
            "properties": {
                "type": "Zinc"
            }
        },
        "material": "minecraft:stone",
        "cluster-size": 64
    },
    "cluster-count": 50,
    "min-height": 0,
    "max-height": 256,
    "retrogen": false,
    "biome": "all",
    "dimension": {
        "restriction": "blacklist",
        "value": [
            -1,
            1
        ]
    }
}