how did obsidian form

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10-11-2016
Chemistry

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how did obsidian form

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Аноним Аноним · Answer 1 · 2016-11-10T22:20:49+01:00

Аноним Аноним

10-11-2016

Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimal crystal growth.

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