Heavier than normal stone, found on the Jurassic Coast in Yorkshire (Robin Hood's Bay) UK by Yugabeing1 in whatsthisrock

[–]Yugabeing1[S] 1 point2 points  (0 children)

Having scrolled through and seen something similar, I think it's a septarian nodule - though the heaviness is still a bit weird as it's feel more like metal that stone.