what is it? Fossil?

[Earth]

Wondering if this is a fossil...off the coast of Delaware....Last photo is the back....thank you

 

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[Eu_citzen]

Certainly a rock. I'm thinking sandstone or a related thing.

 

[Backwoodsbob]

Post it in signs and symbols of treasure thread.

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[DDancer]

Looks to be a sandstone/conglomerate as EU thinks but its been exposed to some hydro-thermal activity and has picked up silicates. The more solid part that looks like a pattern may be crude jasper or chalcedony. The grains are certainly cemented with a brighter silicate.

 

[oldsilver]

That is what we call Limonite. Like an iron ore. In s. Jersey they call it bog iron.
If not , and you pulled it out of the bay, it could be a concretion of some sort.
Good Luck!

 

[oldsilver]

Looks like another piece from the pile melted on it. They used the material during the R. war for cannon balls , etc... cool find!

 

[Eu_citzen]

Looks to be a sandstone/conglomerate as EU thinks but its been exposed to some hydro-thermal activity and has picked up silicates. The more solid part that looks like a pattern may be crude jasper or chalcedony. The grains are certainly cemented with a brighter silicate.

The grains seem to be cemented by limonite.