According to Wiki, basalt should not be destroyed by ghast fireballs (seems logical, because, also according to Wiki, basalt has a blast resistance of 4.2, and ghast fireballs a blast damage of 4), but ghast fireball's do break basalt (I noticed when trying to build a shelter for a giant warped fungus farm).
Steps to Reproduce:
- Build a wall out of basalt
- Spawn a ghast
- Let the ghast shoot a fireball at the wall
The basalt is destroyed by the fireball.
The basalt should not be destroyed by the fireball.