96 FIELD CoLUMBIAN MustEum—-Gero.ocy, VoL. III. 
Ill. ATAXITES. 
These iron meteorites are characterized by a fine granular to 
compact structure throughout. They show no evidence of the cubic 
cleavage and Neumann lines which characterize the hexahedrites, nor 
of the lamellar structure, octahedrally arranged, of the octahedrites. 
The individual grains are in some cases visible to the naked eye, but 
for the most part are of microscopic or sub-microscopic dimensions. 
In some occur peculiar streaks which seem to have crystallographic . 
arrangement, but their exact relations have not been determined. 
These form a special group, which, while not ataxites in the strict- 
est sense of the term, may be included among them for present pur- 
poses. The ataxites show the greatest variation among all iron 
meteorites in their nickel-cobalt content. This varies from 6 to 16 per 
cent, and in the doubtful Oktibbeha to 63 per cent. Two general 





SI 
Name. Fe. | Ni. | Co. |'Cu.| Cr. | P. s. | c. | si. | cL | 2" | Miscen: 
Campo del Cielo ..} 92.33 7.38 Re) pets eee ese et en Pesan Po Fem 
(Wohler’s Iron.) else sf 
TEA See caer 89 22 9.51 ease cee} ZO focene so, tI. o) seme aeeeenn eh cern 
a ; Cy ete, 
ane ee MET 4725) 551 il 225716 03) osime no OS | + os<c4. say Peete nnn eee 
CGInCititiatias meas 94-47] 5.43] .68) .o1 705 .O5 ft. . cag Pe dues een e een enema 
Locust-Grove. 2% 94.30] 5.57] .64! tr. .18 [05 1.02 ae SOIL. 2 bed ee. 
San Francisco del Mezquital] g3.38] 5.89] .30]-...].... 223 
4 eS 93.361 5-401. 71 2031. 716 15, .|. «0 accfen, avoteiei cde teueea Seen Sena 
Siratik (Senegal)..} 94.07] 5.21] .77| .oI .26 O4 |..O1=| cuca ee eaten eee 
