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Need assistance identifying this

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This was found during recent construction at my property on Long Island in New York.


It’s about 1 1/2” at its largest point .  Just smaller than a golf ball.   It has several very shinny spots that are about the size of a pinky nail.  Some smaller shinny spots are present also.   


Thanks in advance for any help you can provide.






asked Oct 16 by John1960 (140 points)

1 Answer

0 votes
Looks like iron pyrite, is it magnetic.
answered Oct 24 by Weasel (58,240 points)