unusual brick shaped rock

[mojjax]

I found this brick shaped rock near the high water mark on a sea shore in Maine . It weighs about 5 pounds . It's a little smaller than a regular brick . It seems too uniform to be made by nature . Could it be an indian item ? The white lines are just veins in the rock . I've been using it as a door stop .
mojjax

 

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[diggummup]

Well it sure looks manmade ,other than that I don't know.Nice though,I like it.Maybe from an old fireplace,somehow?

 

[trk5capt]

Definitely Looks Man Made, Maybe A Fire Brick From An Old Whaling Ship, Or Some Kind Of Ballast, Just a Guess. trk5capt...

 

[Bigcypresshunter]

I don't know anything about bricks, but the veins may help ID.
I used to find many red brick pieces on a Treasure Coast beach. We don't use bricks much for construction here in Florida. I would imagine they would have to cook on a sailing vessel's long voyage and would have to use firebricks on a wooden ship.

 

[Burdie]

That is a very cool find. 8) 8) 8) HH Burdie

 

[Chagy]

Spaniards used similar stones to build their roads they are called "ADOQUINES"

Chagy........