Geofacts?

[JohnDee1]

This is probably going to the last of my fairly obvious natural rock posts. I found all theses rocks over the summer, and something about them seems odd. Rock A I almost thought was firecracked, with it seeming to be a split otherwise smooth sedimentary creek stone. Rock B looked incredibly odd to me, leading me to think it was a flakecore. Rock C is really smooth, though that might just be water caused. Thoughts, and as always thanks for putting up with me.

 

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[uniface]

The second one looks like an ad hoc tool, FWIW.

 

[JohnDee1]

So as the second one, do you mean the dark one? If so that is interesting. I think the stone may be a type of stained quartzite. If it were to be a tool, would it be some type of chopper? Thanks for the response!

 

[Quartzite Keith]

The second one, with the black patina looks like it has flakes removed in a human type fashion, so possibly a core. It does look like water stained fine grained yellow-tan quartzite from here.

 

[JohnDee1]

Thanks for the responses. That is intriguing the black patinated one might be an artifact. I'll have to check out the area I found it, as I generally don't look there. Thanks again!

 

[uniface]

Yes -- the dark one.

Ad hoc tool, or flake core. They were often one and the same.