{
	"feature": "tfg:mars/surface/charnia",
	"placement": [
		{
			"type": "minecraft:count",
			"count": 4
		},
		{
			"type": "minecraft:in_square"
		},
		{
			"type": "minecraft:biome"
		},
		{
			"type": "minecraft:heightmap",
			"heightmap": "OCEAN_FLOOR"
		},
		{
			"type": "minecraft:block_predicate_filter",
			"predicate": {
				"type": "minecraft:matching_fluids",
				"fluids": "tfg:semiheavy_ammoniacal_water"
			}
		}
	]
}