After testing this for a while, I've discovered it is the culprit of a rather serious bug involving voxel terrain texturing. After saving a game using this mod, and then loading that game in a later session of Space Engineers, it effectively breaks the texturing on all asteroid voxels -- they appear very dark, almost black... as if heavily in shadow. Thorium ore appears black with faint golden sparkles.

No artificial lights can illuminate the terrain. Rebooting the computer doesn't help. Reloading textures in-game doesn't fix it either. Only by removing this particular mod can you restore normal voxel textures.

Sadly, this makes the mod only useful for a dedicated server that won't stop running. As soon as a session with this mod is saved & closed, the bug ruins all voxel terrain textures in that world for as long as the mod remains installed.