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The top documents tagged [volcanic pipes]
Irruputuncu, Chile, Smithsonian Geology for Engineers Minerals and Rocks (I)
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By Evan Daniel Tammi Diamonds were formed millions of years ago below the earth's surface between 75 to 120 miles deep by pressure and extreme heat
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Geology for Engineers
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EVOLUTION OF DIAMONDS
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Parts of a Volcano 1. Gas emission: various gases such as CO2, H2O, nitrogen, and lesser gases such as chlorine, hydrogen, and argon. 2. Crater: depression
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DIAMONDS
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