Where are obsidian dating labs


26-Jan-2020 07:37

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Their abundant, closely spaced crystallites (microscopic embryonic crystal growths) are so numerous that the glass is opaque except on thin edges.

Many samples of obsidian contain spherical clusters of radially arranged, needlelike crystals called spherulites.

Rickert , 3 February 2006 (UTC) Hi all, is the upper limit (5 mil yrs) given at the end of the first para correct?

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Obsidian, igneous rock occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes.



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