Pennsylvania Eastern Region Abstract Competition. The Wright Center for Graduate Medical Education (Formerly Scranton Temple Residency Program) in Scranton, PA will host the ACP PA Eastern Regional Meeting on October 6, 2012 at The Commonwealth Medical College (TCMC) in Scranton. The competition is open to all residents in the Pennsylvania Eastern Region.
Diamonds are formed as an allotrope of the element carbon, at depths greater than 90 miles. The pressure and heat at this depth is critical to the formation of the diamonds thâ¦at are mined at the surface today. At crustal pressures, the stable form of carbon is the allotrope graphite.
Graphite and diamond are the two mineral forms of carbon. Diamond forms in the mantle under extreme heat and pressure. Most graphite found near Earth's surface was formed within the crust at lower temperatures and pressures. Graphite and diamond share the same composition but have very different structures.