What type of clastic rock forms from tiny particles of clay?

Answer 1

Pelites are clastic rocks made from clay and they may be specifically called mudstones, siltstones, and shales.

Answer 2

Siltstone is a clastic rock formed from tiny particles of clay. The small particle size distinguishes siltstone from shale, which is also made of clay particles but has a finer texture. Siltstone typically forms in marine or river environments where clay-sized particles settle out of suspension and are compacted over time.