Which glass-like rock is made from rapidly cooling volcanic lava? – Answer the following Which glass-like rock is made from rapidly cooling volcanic lava? Correctly and Stand a chance to win Amazing Prizes Every Day.
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Which glass-like rock is made from rapidly cooling volcanic lava?
Answer – Obsidian – Obsidian is an igneous rock which means it derives from magma or lava. The rock forms when molten lava cools so rapidly that the atoms cannot form a crystalline structure. This results in a glass-like rock that has been treasured for centuries for its beauty. Most obsidian is black but occasionally the inclusion of iron oxides creates a red or brown hue. Due to its smooth character obsidian was used by ancient civilizations, such as the Aztecs and the Greeks, to make mirrors.:
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