HUNTINGTON. — SMITHV1LLE METEORIC IRON. 253 



relative arrangement of these three minerals in the individual nodules. 

 In places the schreiberseit widens out into bright patches between the 

 Widmanstattian plates, especially in proximity to the troilite nodules. 



This inequality in the distribution of the schreiberseit gives a very 

 varied appearance to the etched surface, and areas selected from oppo- 

 site ends of the slab shown in the plate (Fig. 2) could not possibly be 

 identified by the Widmanstattian figures alone. In this character the 

 iron very closely resembles those of Arva and Sarepta. 



Several analyses were made of the Smithville iron, though in the 

 opinion of the writer such analyses are of very little value on account 

 of the difficulty of sampling, since the nickel and cobalt must vary 

 with the ttenite plates, while the phosphorus would depend upon how 

 much schreiberseit happened to be in the mixture selected for analysis. 

 Choosing, however, as uniform material as possible, the average analy- 

 sis gave : — • 



Iron 91.57 



Nickel 7.02 



Cobalt 62 



Copper Trace 



Phosphorus .18 



Residue, mainly Cliftonite .... .15 



99.54 

 Comparing this with the irons most closely resembling it we have : — 



Greenbrier Co.,* Jennie's Creek,T Cosby's Creek, J Sevier Co.,§ 

 West Virginia. Wayne Co., W. Va. Cocke Co., Tenn. Tenn. 



Iron 91.59 91.56 87.00 93.80 94.03 



TVirkpl 7 11) 



Cobalt '.J « 8 ' 31 « 1200 *•"« "* 



Copper Trace 



Phosphorus .08 .13 



Carbon — — .50 



Residue , 1 2 



Loss — — .50 .10 .10 



99.50 100.00 100.00 98.56 98.57 



* Mineralogical Magazine, Vol. VII. p. 183, 1887. 

 t American Journal of Science, 3d ser., Vol. XXXI. p. 145, 1886. 

 t Ibid., 1st ser,, Vol. XXXVIII. p. 250, 1840 ; Ibid., 1st ser , Vol. XLIII. 

 p. 354, 1842. 



§ Ibid., 2d ser., Vol. IV. p. 83, 1847. 

 U By difference. 



