Scoria in worlds

Maybe Scoria can be obtained in the deepslate dripstone caves? Like for example it could be in the lava pits towering up

or maybe it could be added to a new deepslate desert cave biome. The caves could look similar to the normal desert caves but with deepslate patches and magma by the lava pits, with scoria

the image above is what I mean. maybe they could be replaced by scoria in the deepslate desert caves.