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Obisidian found on NY beach

Hi to all!
Over the weekend found what I beleive to be obsidian laying on the beach on Long Island, NY. Not sure what it's doing in NY. It's about the size of a quali egg...very lightweight...dull gray exterior.

here are some pics:
www.roycecustom.com/obs1.jpg
www.roycecustom.com/obs2.jpg
www.roycecustom.com/obs3.jpg
www.roycecustom.com/obs4.jpg

I gave it a sharp tap with a metal letter opener and it fractured easily,revealing a complete glass interior.

Sooo....
Is this obsidian?
What's it doing on a NY Beach?
How can I manually polish it for display?

Thanks for any help & advice.
Regards,
Joel

From roycegc - June 01, 2010 at 08:48:28
Email:

Message: 69098



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