Irruputuncu, Chile, Smithsonian Geology for Engineers Minerals and Rocks (I)
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.
Geology for Engineers
EVOLUTION OF DIAMONDS
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.
DIAMONDS
