Can anyone tell me what type of rock?

[Ndaug1980]

I posted this in native American artifacts but no answer. I am digging a overhang and these white cracked looking rocks are popping up every now and then. Clay? I'm just not sure.

 

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[Kray Gelder]

I think we can say they're not artifacts. They could be clay. Can you scrape it with your fingernail? Really fine grained or coarse grain?

 

[Ndaug1980]

Not hard at all. Really smooth to

 

[Kray Gelder]

Probably clay, then. Which means your overhang may not be stone, just unconsolidated soil. Be careful it doesn't drop on your head!

 

[Ndaug1980]

OK. Thank you.