{
	"feature": "tfg:earth/fluid_vein/gas_vent",
	"placement": [
		{
			"type": "minecraft:rarity_filter",
			"chance": 30
		},
		{
			"type": "minecraft:in_square"
		},
		{
			"type": "minecraft:heightmap",
			"heightmap": "MOTION_BLOCKING_NO_LEAVES"
		},
		{
			"type": "minecraft:block_predicate_filter",
			"predicate": {
				"type": "minecraft:not",
				"predicate": {
					"type": "minecraft:matching_blocks",
					"offset": [ 0, -1, 0 ],
					"blocks": [
						"tfc:fluid/salt_water",
						"tfc:sea_ice",
						"minecraft:ice",
						"minecraft:packed_ice",
						"minecraft:blue_ice"
					]
				}
			}
		},
		{
			"type": "tfg:fluid_vein",
			"vein_ids": [
				"tfg:natural_gas_surface_indicator",
				"tfg:natural_gas_permafrost",
				"tfg:natural_gas_swamp",
				"tfg:natural_gas_volcanic"
			]
		}
	]
}