Trinitite ID: 3320 | This file appears in: The Trinity Site and the First Atomic Bomb The glassy green rock which was formed from extreme heat exposure due to the blast of the first atomic bomb. It is named after the Trinity Site, Trinitite. Photograph courtesy of and used with permission by the National Security Research Center at Los Alamos National Laboratory. Download Original File "Trinitite " appears in: The Trinity Site and the First Atomic Bomb