METEORITES OF NORTH AMERICA. 247 



It is oval in shape, having one Bide somewhat flattened. Its surface is entirely covered with depressions or dents, 

 "as if it had been patted all over with pebbles " or clam shells, while yet soft or plastic. The size and shape of these 

 concavities are various, from 1 to 4 inches across; and in addition, there are three rounded holes an inch deep as if 

 made by the little finger. 



It measures 14 by 9 by 7 inches, and weighs 120 pounds. The iron shows a highly crystalline and homogeneous 

 structure, requiring no etching to bring out the Widmannstatten figures; indeed, it seems probable that the crystal- 

 line structure of the entire mass is in conformity with that of a single individual. The cleavages are octahedral, and 

 reveal a rather coarse lamination. The schreibersite separating these thick laminae is very thin, and runs in per- 

 fectly straight lines, dividing the polished surfaces off into rather broad, triangular, and oblique-angled spaces, whose 

 areas again are beautifully covered by very small irregular dots and characters, themselves distributed in parallel 

 rows, but among which continuous straight lines appear to be wanting, the boundaries of the larger, triangular, and 

 quadrangular spaces only consisting of rectilinear lines. There would therefore seem to be two varieties of schreiber- 

 site present; one in flat leaves, the other in wavy semicylinders or prisms. The latter may be the rhabdite of Reich- 

 enbach. Both kinds, however, are equally taken into solution by long digestion in aqua regia. 



Analysis : 



Fe Ni P Graphite 



94.98 4.52 0.07 0.10 =99.67 



No sulphur was present, and no examination for metals, often present in small quantities in meteoric irons, was 

 made. 



In Mineral Resources of the United States 2 for 1883-84 the following analysis of the mass 

 by Gustave Gehring is given: 



Fe Ni Co Si S PC (in combination) Graphite 



94.456 4.869 0.261 0.041 0.004 0.002 0.115 0.067 =99.816 



Hardness, 3.75; specific gravity, 8.076. 



Analysis of the meteorite was made by O. Kostler and described by Cohen and Wein- 

 schenk, 3 as follows: 



Turnings of the iron from the Vienna Museum specimen to the amount of 67.29 gr. were dissolved in HC1 + 10 sq. 

 Solution was easy and without marked evolution of H 2 S. The result was as follows: 



Nickel-iron in solution 66. 2400 gr. 98. 44 



Magnetic residue, impure tamite 0. 7205 " 1. 07 



Nonmagnetic residue 0.3295" 0.49 



67.2900 " 100.10 



The magnetic residue was not a pure product. The absence of a marked quantity of schreibersite may be due 

 to the fact that being brittle it fell out in the turning. The nonmagnetic carbonaceous residue left behind, after heat- 

 ing and treatment with HC1, some small, colorless, doubly refracting grains and spheroidal particles resembling clif- 

 tonite. This may account for Shepard's graphite. Analysis by O. Kostler of a dilute solution gave: 



Fe Ni Co P 



91.12 6.92 1.73 0.00 =99.77 



Later, Cohen 4 reported an analysis by Manteuff el, as follows : 



I allowed Manteuffel to make a new analysis of Ivanpah, as the earlier one by Kostler seemed too high in cobalt. 

 Manteuffel's analysis (substance taken, 0.7886 gr.) gave: 



Fe Ni Co P Cu 



92.68 7.43 0.66 0.03 0.01 =100.81 



This new analysis may be considered correct. If one takes for the isolated tsenite (1.07 per cent) a content of 

 Ni + Co of 36.96 per cent, the following composition is indicated: 



Fe Ni Co Cu p Nonmagnetic 



91.18 7.63 0.66 0.01 0.03 0.49 =100 



The content of schreibersite can not be determined from the phosphorus on account of the fact, previously men- 

 tioned, that filings were used for the analysis. 



Brezina 5 gave the following account of the structure of the iron : 



Lamella? long, straight, distinctly grouped, slightly puffy; bands, 0.5 to 0.7 mm. wide partly. Kamacite slightly 

 flecked, granulated, with faintly oriented sheen. Tsenite fine but abundant. Fields very abundant, almost entirely 



