Petroleum ( Fuel )

This would be found on the deep darks as a rare resource to find at the bottom of the deep darks. It can be covered by “sculk fungus” or not making it much rarer to the naked eye. It would be used in any type of furnace ( Blast, Smoker etc) and would last 190 blocks per shard. This would only be used as a fuel and would be a very efficient way to cook things because the difference of making a coal block and having a petroleum shard is that once the block/item stops smelting/cooking the petroleum stops and the fuel will be the same as when you come back in like the coal block.