Unknown sea sphere

[Gary OB]

Found this strange rock on a beach in Kent UK about 10 years ago, its about the size of an apple and is very heavy. Does anybody have any clue what it could be please.

[Gary OB]

[Gary OB]

[RandyB]

Putting something in for scale is always a good idea when posting pics to the forum, based on the apple reference I'm assuming around 7 to 8cm, maybe close to 3".  Looks similar to a crab concretion, but not sure if that's accurate for the area in question.  Curious what others familiar with the area will think.

[Gary OB]

For scale. Sorry was first post.

 

[ynot]

With the perfect round spherical shape it could be a stone cannon ball.

Tony

Edited December 25, 2016 by ynot

[FossilDudeCO]

is it magnetic?

[JohnJ]

The cortex and 'scars' remind me of a flint nodule.

[supertramp]

Since it has an almost perfect spherical shape, you might derive its density with good accuracy simply measuring diameter and weight, which would be informative of the nature of material. John could be right.

 

 

 

ciao

 

 

[Gary OB]

It isnt magnetic, there is a small chip in the crust that shows a flint like texture. What is a flint nodule?

It weighs 1.18 LB and as a roughly 70mm diamiter.

 

[bone2stone]

5 hours ago, ynot said:

With the perfect round spherical shape it could be a stone cannon ball.

Tony

My first thought as well.

Jess B.

[supertramp]

42 minutes ago, Gary OB said:

It isnt magnetic, there is a small chip in the crust that shows a flint like texture. What is a flint nodule?

It weighs 1.18 LB and as a roughly 70mm diamiter.

 

so it has a roughly 2.9 gr/cm3 density; I think you got a chert nodule

 

ciao

[Gary OB]

Thanks for all the info guys, should i crack it open? and merry Christmas all

 

[LordTrilobite]

8 hours ago, ynot said:

With the perfect round spherical shape it could be a stone cannon ball.

Tony

 

This.

[RandyB]

Stone cannonball would be very cool, definitely wouldn't want to break that apart.  May want to get it checked out by an expert, maybe check into expertise at a local museum