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Posted in response to Re: Obsidian in Central New York State? from Whale on January 22, 2010 at 20:29:19:
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If it truly is a natural volcanic obsidian, then it would have been brought to the place where you found it by people. Any naturally occurring obsidian from the area would have had plenty of time to devitrify from the time of the last volcanic activity in the area.
From David Von Bargen - January 27, 2010 at 11:08:59
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