Any ideas??

[Joshua donegan]

I found this recently it appears to have warts any ideas on what it is

 

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[DDancer]

Looks to be a sand stone with concretions of some sort. Might even be another mineral like selenite that got frozen in the sediment. My thoughts but it does look neat.

 

[Joshua donegan]

Is sand stone really really hard? I'll get a couple more pics cause the inside is all crystally and the back is a lot different also

 

[Joshua donegan]

Oh so any ideas now ya see the rest

 

[meMiner]

Have you looked at it with magnification (ie a jewelers loupe)? My first guess would be organic (fossil).

 

[Joshua donegan]

Right on. To me I'd guess a petrified chunk of skin But what would I look for?? Cell structure? N what ya mean by organic fossil?? Sorry for all the questions just tryin to figure a few things out

 

[DDancer]

With the other views I can add that it may be limestone as well. I dont see anything that would indicate that it has fossils as the nodules appear to be somewhat random in shape. Closer views may help there. Try putting a bit of vinegar or other mild acid on a test area and see if there is any reaction. Also you can try scratch testing for hardness and look at the material from the test to see if it has a gritty or grainy texture like fine sand.