Obsidian

 

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Obsidian

 

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Obsidian

 

Meaning of term obsidian

A volcanic mineral that was the first form of natural glass used by humans. It is usually black, but it can also be very dark red or green, its splinters are often transparent or translucent.

 

Category : material glass

 

Source:

http://web.simmons.edu/~boyd3/lis419/thesaurus/thesaurus.xls

Corning Museum of Glass | Glass dictionary. (1993). Retrieved February 12, 2008, from http://www.cmog.org/index.asp?pageId=687.

 

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