What type of rock do I have here?

[Minrelica]

I found this a few years ago somewhere that I can't remember... I had it stashed away and just found it a few minutes ago and have a renewed interest in it. Is there a name for this type of rock? Any info or insight would be appreciated.

I took a photo of all three angles [somewhat of a triangle shape] and top/bottom. Each side is approx 1 3/4" wide and the thickness is just under 1".

THX!

 

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[rock]

That would make a nice paper weight. I would have to say it is a type of mud stone by the layers it shows from sediment. You think you found it in a river or creek? Looks like water stain in the last photo. I have a large mud stone I brought home from a river near me but it isnt near as nice looking as yours. They are millions of yrs old if it is a mud stone. Lets see what everyone else says, rock

 

[Minrelica]

Thanks Rock, yes it would make a great paperweight... I'll keep it out where I can see it this time..Unfortunately I truly have no recollection of where I found it.. I vaguely remember putting it in my pocket but whether that was by a river or creek is hard to say but chances are very good that it was found by one or the other.. Thanks again, I'd like to see what others have to say as well

 

[Eu_citzen]

Has a resemblance of "iron stone" as it is commonly called.