36 



AMERICAN MUSEUM (AIDE LEAFLETS 



and bears a close and interesting resemblance to the terrestrial basaltic 

 igneous rock peridotite. The content of chromite (9 per cent of the 

 whole) is remarkable and is the highest yet reported in meteorites. 



Long Island presents a feature heretofore unknown in meteorites. 

 Certain of the piano of fracture show striated surfaces with grooving 

 and polishing (slickensides) duv to the parts grinding together in their 



LONG ISLAND 



Slickensided surface showing movement in the mass before it tell. 



flight through space before the mass reached our atmosphere. Two 

 of the pieces in this case show such slickensided surfaces and one of them 

 is illustrated on this page. 



Other line specimens of Long Island may he seen in the general 

 meteorite collection on the fourth door of the Museum (Hall Xo. K)4). 



I 



