HOVEY, THE FOYER METEORITES 35 



The approximate mineral composition of Forest City is 



Nickel-iron 19.4% 



Troilite 6.2% 



Silicates (feldspar, enstatite, etc.). . . .74.4% 

 The nickel-iron is an alloy consisting of 



Iron 92.7% 



Nickel 6.1% 



Cobalt 0.7% 



The specific gravity of the mass is 3.8. Some chromite is present, but 

 not as much in proportion as is found in the Long Island, Kansas, 

 meteorite. 



Some of the smaller individuals of this fall may be seen in the 

 general Museum collection on exhibition in the Morgan Hall of miner- 

 alogy (No. 404 of the fourth floor). 



e 



LONG ISLAND (KANSAS). 

 (Aerolite.) 



Long Island is the largest stone meteorite known, the fragments 

 which have been recovered aggregating more then 1,325 pounds in weight. 

 The pieces here exhibited weigh together 86 pounds, the largest weigh- 

 ing 32;j pounds. Some of them show the original external surface of 

 the meteorite, but most of them show only fractures. The meteorite 

 was found in more than 3,000 pieces scattered over a gourd-shaped area 

 only 15 or 20 feet long and 6 feet wide in the northwestern corner of 

 Phillips County, Kansas, near the town of Long Island, whence its 

 name. The small area of distribution shows that the mass burst just 

 as it struck the ground, or that it was broken by impact. The late 

 time of bursting is also indicated by the lack of secondary crust on 

 the pieces. 



Stony matter makes up about SO per cent by weight of Long Island, 

 the remainder having originally been nickel-iron and troilite, now 

 partly changed to limonite through rusting. On the polished surfaces 

 of some of the fragments in the case the nickel-iron may be seen as small 

 shining dots. The stony matter consists essentially of the minerals 

 bronzite (one of the orthorhombic pyroxenes), olivine and chromite 



