✅ SOLVED Weird White Stone - Please help!

[Old Pueblo]

Can anyone tell me what kind of rock this is? Found in extreme southeast Arizona, a few miles north of the border.



The brown you see is just dirt.

 

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[Charlie P. (NY)]

Calcite nodules?

 

[Itsmine]

I agree with Charley. Looks like calcite. https://www.google.com/search?q=cal...UICigB&biw=1024&bih=512#imgrc=TqF97suM8DIJ8M:

 

[bradyboy]

animal kidney stone
it looks like its digestive
how hard is it, can you scratch it?
Embryo ?

 

[Old Pueblo]

Its very hard and nothing comes off if you scratch it.