Smithsonian Report, 1942.— Henderson and Perry 



Plate 4 



^-'""'^*i*i%j.; 



~"X. 



b 



Finer Octahedrite structures. 



Narrow bands of kamacite si'])arated from each other by thin hnes of taenite. Structures such as these 

 indicate nickel content higher than that of the coarse octanedrite. 



a, Grand Rapids, Mich, (for composition see table 2); 6, Reed City, Mich. Centered at the bottom is an 

 area where the orderly octahedrite structure has been broken up. This is assumed to be the result of local- 

 ized heating during its flight. The rodlike inclusions of troilite at the upper left cut through the 

 octahedral structure. 



