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Obsidian is usually found in caves underground where flowing water hits still lava.
No, obsidian is also called 'volcanic glass,' since it is a product of cooled lava. Since there are no volcanoes in Louisiana there will not be any natural obsidian.
Obsidian is volcanic glass, derived from the quick cooling of high silica lava.
Obsidian cools so quickly the mineral grains do not have time to form.
Obsidian is a hard, dark volcanic rock that is formed by the rapid solidification of lava. Its texture is glassy and shiny black.