what is this very heavy rock found in the ocean in NYC?

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Offline ebromb

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[attachment=21036]VERY heavy for the size (about a small fist). Not magnetic.


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Offline chris

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Re: what is this very heavy rock found in the ocean in NYC?
« Reply #1 on: 24/02/2016 18:13:47 »
Can you do some close-ups of the surfaces please? It's a bit hard to see clearly in those pictures.
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Offline ebromb

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Re: what is this very heavy rock found in the ocean in NYC?
« Reply #2 on: 24/02/2016 18:17:59 »
see attached

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Offline ebromb

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Re: what is this very heavy rock found in the ocean in NYC?
« Reply #3 on: 24/02/2016 18:19:22 »
one more

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Offline chris

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Re: what is this very heavy rock found in the ocean in NYC?
« Reply #4 on: 24/02/2016 18:33:51 »
It looks like part of a conduit, possibly a lump of black smoker or similar, I would speculate with my untrained eye...
I never forget a face, but in your case I'll make an exception - Groucho Marx

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Offline RD

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Re: what is this very heavy rock found in the ocean in NYC?
« Reply #5 on: 25/02/2016 00:25:25 »
It could be man-made, e.g. lead used to seal an iron-pipe ...

https://en.wikipedia.org/wiki/Lead
 
[ It has vesicles , so you can rule-out meteorite ].
« Last Edit: 25/02/2016 00:44:56 by RD »

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Offline Bass

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Re: what is this very heavy rock found in the ocean in NYC?
« Reply #6 on: 02/03/2016 21:20:30 »
My guess is some sort of industrial slag.
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Offline chris

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Re: what is this very heavy rock found in the ocean in NYC?
« Reply #7 on: 03/03/2016 20:08:22 »
My guess is some sort of industrial slag.

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I never forget a face, but in your case I'll make an exception - Groucho Marx