Meteorite falls in June: Two sets of observations

Two types of meteoritic events are associated with the calendric period June 13-30. One is an excess of falls of certain basaltic meteorites. These comprise a new subgrouping of achondrites (designated ''NUJ'') whose lithologies suggest possibly similar preterrestrial histories. Historical high-energy impact-like events on the Earth and Moon have also occurred in late June. In addition to much studied events in 1178, 1908 (Tunguska), and 1975, these include an impact-like lunar event known to Islamic scholars whose occurrence in 617 A.D. may have been June 26-27.