NEWTON COUNTY (ARK.) METEORITE: 



CONTAINING ON ITS SURFACE CARBONATE OF LIME. 



The first notice of the meteorite of Newton County was 

 made in 1860 by Prof. Cox, who was engaged in the geological 

 survey of Arkansas. The original has not been obtained. The 

 only fragment of it, being in the hands of Judge Green, was 

 given to Prof. Cox, who has kindly presented it to me. The 

 weight of the fragment is twenty -two and a half ounces, and 

 was evidently broken off from one corner of the mass, as it 

 presents three of the original surfaces. 



This meteorite is of the mixed variety, and can not be 

 classed with either the metallic or the stony meteorites. It 

 is one of the most interesting that has been discovered in 

 the United States, differing from any other yet found in these 

 regions. 



The stony matter is very distinctly crystallized, and some of 

 the minerals can be easily detached and examined separately. 

 The metallic portion constitutes somewhat over one half of the 

 mass, and owing to the diffusion of the stony matter has a 

 coarsely reticulated structure. 



When broken under the hammer, and the iron separated by 

 the magnet, it is obtained in coarse grains, varying from three 

 to four grains down to very small fragments. The exterior is 

 of a rusty color, roughened by projection of nickeliferous iron, 

 and over several parts of the surface there is a white incrus- 

 tation. 



Specific gravity taken on different pieces varies from 4.5 

 to 6.1. By mechanical means and the aid of the magnet the 

 following minerals were separated: Nickeliferous iron, chrome 

 iron, sulphuret of iron, hornblende, olivine, and carbonate of 

 lime. 



Nickeliferous Iron. — I may as well mention the manner in 

 which I separate the iron from the stony matter of meteorites. 



