Fossil ID please, coral ? Geological ?

[Crann]

Port Mulgrave find, looks unusual, any ideas ? Thanks.

[Fossildude19]

Looks geologic to me.   

[TqB]

I believe that's a piece of Permian concretionary Magnesian Limestone - it quite often turns up as erratics

on the Yorkshire coast. Plenty in situ on the Durham coast.

[Crann]

So about 250 - 299 myo... little old chunk...

[terapoza]

I have somewhere similar stone from Tynemouth near Durham. Looks like small cannon balls. 

[abyssunder]

I think, the crystals have a similar look to those of the " Boji stones ".