what kind of rock is this?

[ConceptualizedNetherlandr]

that would be a pretty big bump of s**t it weighs 20 kilo. maybe a dinosaur corprolite

 

[ConceptualizedNetherlandr]

please look at my last photoś and let me know what you think.

I think, that if it were little ole me, I would crush up some of it and then gravity separate the sands and see what you have. Not too fine a crush. You should be able to more easily ID some of the mineral constituents given the apparent grain size distribution. So far it looks like just another hunk of crust with uninteresting morphological history.