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Science

Answered

describe how obsidian formed?

Sagot :

ZOEYJUDIGO ZOEYJUDIGO

Answer:

obsidian, igneous rock occurring as a natural glass formed by the rapid cooling of viscous lava from volcanoes. Obsidian is extremely rich in silica (about 65 to 80 percent), is low in water, and has a chemical composition similar to rhyolite.

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