What is this Stone found near Cape Elizabeth Maine Lighthouse on Beach

[Golfer]

Found on beach at lighthouse in Cape Elizabeth Maine. Black color.  I think it looks like a piece of coal.  Has a smooth area, rest of stone is rough. Lightweight 1 ounce. Has shiny elements. 

[Golfer]

Doing some research may be black tourmaline. 

[Mark Kmiecik]

It does look like coal to me.

[Ludwigia]

Looks like coal to me too. It's much to lightweight to even think about turmaline. Just for fun I googled "Cape Elizabeth Maine Coal" and discovered that over half a century ago a freighter full of coal ran aground just off the cape.

[rocket]

think its coal, agree with @Mark Kmiecik & @Ludwigia

[Golfer]

Too bad the freighter didn’t have gold coins!

[Golfer]

It’s wonderful the whole crew survived due to great rescue efforts! Thank you Maine rescue crew!