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Atomic Rock Shop, also known as Alamogordo glass or atomsite, is the glassy residue that was left on the desert floor following the test of the Trinity nuclear bomb, which used plutonium, on July 16, 1945, near Alamogordo, New Mexico. It has been against the law to remove anything from the Trinity website since 1952. The Trinitite that is displayed and sold on this site comes from a group that Dr. Pray collected just before the site was bulldozed in 1952. The blast was the equivalent of 18000 tons of TNT. As a result, the land around it was singed, turning a light olive green, glass-like substance where the sand had melted and reformed into trinitite. Atomic Rock Shop is almost entirely melted silica, but the minerals Olivine, Feldspar, and others that make up desert sand are also present. Near Los Alamos, the remaining trinitite was buried in 55-gallon drums in 1952 after the explosion site was bulldozed.