What kind of rock is this?

[Ozarksrockturner]

I found some interesting rocks in a local creek (in Southwest Missouri) and would like to clean them up without causing any damage. They seem to be sandstone and are mostly covered with mud and Creek slime. In the following pictures there is one that I found "face" down and resembles a bear to me, one looks like maybe a dog or wolf and is still covered with dried creek slime and the last one I can see what looks to me like a duck looking over it's shoulder, but that's just me lol. If anyone sees the same or maybe something different, or if I'm loosing it please let me know. Its the coloring that I'm not sure about.if you know what we are looking at I would appreciate your knowledge.

 

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[Treasure_Hunter]

Sorry, please don't take this wrong, but it is your imagination seeing the animals. I walked the fields, creeks and streams of mid Missouri for over 20 years, there are lots of genuine, real indian artifacts there, I found thousands of them, real artifacts. Your wasting your time on these rocks when there are real artifacts out there. If your not sure what to look for check out this link, https://associations.missouristate.edu/mas/identification.html or buy some books on Artifacts of Midwest.

 

[Ozarksrockturner]

Sorry, please don't take this wrong, but it is your imagination seeing the animals. I walked the fields, creeks and streams of mid Missouri for over 20 years, there are lots of genuine, real indian artifacts there, I found thousands of them, real artifacts. Your wasting your time on these rocks when there are real artifacts out there. If your not sure what to look for check out this link, https://associations.missouristate.edu/mas/identification.html or buy some books on Artifacts of Midwest.

Hey I appreciate that thank you for your time and your input I was just inquiring as to what type of rocks they were I haven't seen rocks of that color in my area before and it just kind of intrigued me as to what type of rocks they may be.

 

[G Freeman]

Just laying in the stream will cause the black color.

 

[hvacker]

You've got tons of lime stone in your area. It's one big cave. Most lime stone will react with acid.
I say most because I've been told that after a lot of exposure to acid water seeping through the soil the reactions stop.
The black reminds me of what is called desert varnish out west.

A good friend lives where you are. The place has lots of caves.