Carbonado compared to carbon‑12, relative to typical diamonds). Carbonado exhibits strong luminescence (photoluminescence and cathodoluminescence) induced by nitrogen and by vacancies existing in the crystal lattice. Luminescence halos are present around radioactive inclusions, and it is suggested that the radiation damage occurred after formation of the carbonados, an observation perhaps pertinent to the radiation hypothesis listed below. The origin of carbonado is controversial. Some proposed hypotheses are as follows: None of these hypotheses for carbonado formation had come into wide acceptance in the scientific literature by 2008. Supporters of an extraterrestrial origin of carbonados propose that their material source was a
Rock Island 886 Rock Island 886 Chicago, Rock Island & Pacific 886 is a 4-6-2 Pacific type steam locomotive built in 1910 by the American Locomotive Company for the Rock Island Railroad. The locomotive's real number is 887. It was renumbered 886 in July 1955 when donated for display. The real 886 was already scrapped when the city of Peoria asked the Rock Island to donate the 886 for display since it was the last steam locomotive to operate out of Peoria. What happened in the end was that the Rock Island offered 887, an identical model to the 886, to be renumbered