trin·i·tite 
(trĭnĭ-tīt′)
(trĭnĭ-tīt′)n.
An olive green, glasslike substance formed from the sand melted by the heat that was generated by the first nuclear blast at the New Mexico test site in 1945.
[After the Trinity Site in New Mexico, after Trinity, code name for the first atomic bomb test.]