Xo. 2306. 



CUMBERLAND FALLS METEORITE— MERRILL. 



101 



A 70-grani fragment which, so far as could be judged, was repre- 

 sentative of the gray brecciated portion of the stone, was selected 

 and, through the courtesy of Dr. George Steiger, ground at the 

 laboratory of the U. S. Geological Survey. This yielded as in column 

 I below. Unfortunately Mr. Shannon was not present during tlie 

 process of grinding and it is possible that a larger portion of small 

 particles of the dark stone were incorporated in the mass than was 

 surmised from the appearance of the fragment. The probability of 

 this, which was not at first realized, is suggested by the slight excess 

 of magnesia (MgO) and ferrous oxide (FeO) in the bulk analysis over 

 that in the enstatite given above. In columns II, III, and IV are 

 given for comparison previously published analyses of the Busti, 

 BishopviUe, and Shalka stones. It wiU be noticed that so far as the 

 magnesium is concerned the Cumberland FaUs stone agrees very 

 closely with that of the first-named, although a trifle higher in silica. 



Bulk analyses of the light (major) portion of the meteorite. 



Silica (SiOa) 



Alumina (AI2O3) 



Chromic oxide (GuO^). . 

 Pliosplioric oxide (P2OS) 



Iron(Fe) 



Manganese (Mn) 



Nickel (Ni) 



Cobalt (Co) 



Copper (Cu) 



Chromium (Cr) 



Nickel oxide (NiO) 



Cobalt oxide (CoO) 



Ferrous oxide (FeO) 



Lime(CaO) 



Magnesia (MgO) 



Manganous oxide (MnO) 



Soda(Na20) 



Potash (KoO) 



Water (H2O) 



Sulphur (S) 



Phosphorus (P) 



Chlorine (CI) 



Carbon (C) 



Less for (CI, S, P)..... 



55. 172 

 .382 

 .062 



Trace. 

 .888 

 .005 

 .059 

 .004 

 .003 



Trace. 

 .123 



Trace. 

 2.916 

 1.586 



38. 734 

 .112 

 .157 

 .150 

 .167 

 .784 

 .034 

 .028 

 .164 



101. 530 

 .509 



100. 961 



52.73 



78 



4.28 



1.18 



37.22 



.01 



Ign. 



2.35 

 2.92 



99.47 



III 



57. 034 

 1.706 



181 



039 



.538 



Trace. 



1.265 



2.016 



33. 506 



.189 

 1.027 



.089 

 1.995 



.297 



99. 882 

 .147 



99. 735 



IV 



52.51 



.66 



1.25 



Trace. 



.25 



16.81 



.89 



28.35 



22 



14 



101. 08 



I NajS.CaSoi.CaClj 



» By ignition. 



The results given in column I seemingly bear out the microscopic 

 determinations, and, in connection with the analysis of the white 

 pyroxenic constituents given on page 100, warrant the conclusions 



