46 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



The magnetic portion yielded : 



Per cent. 



Iron (Pe) 70.1 or 4.09* 



Nickel (Ni) 8. or .47* 



Cobalt (Co) .3 or .018* 



Phosphorus (P) .lor .006* 



Ferrous sulphide (FeS) 1. 9 or .110* 



Silicates 19.2 or 1.121* 



99. 6 5. 815 

 The nonmagnetic portion yielded: 



Per cent. 



Iron (Fe) 2.43 



Nickel (Ni) .27 



Cobalt (Co) .02 



Sulphur (S) 2.06 



Phosphorus (P) .14 



Silica (SiOi) 43.05 



Alumina (Al^Oa) 2.68 



Chromic oxide (CraOs) .62 



Ferrous oxide (FeO) 19.06 



Nickel oxide (NiO) j 



Cobalt oxide (CoO)/ ^^ 



Manganous oxide (MnO) .13 



Lime (CaO) 1.91 



Magnesia (MgO) 27.01 



Potash (K:0) .34 



Soda (NajO) 1.34 



101. 14 



Less O for S 1. 03 



100. 11 

 From these figures the bulk composition of the entire mass was 

 calculated as follows: 



Per cent. 



Iron (Pe) 6.38 



Nickel (Ni) .72 



Cobalt (Co) .04 



Phosphorus (P) .14 



Ferrous sulphide (FeS) 5.44 



Silica (SiOO 41.06 



Alumina (Al-Os) 2.55 



Chromic oxide (CraOs) .59 



Ferrous oxide (PeO) 13.80 



Nickel oxide (NiO) .07 



Manganous oxide (MnO) .12 



Lime (CaO) L 82 



Magnesia ( MgO ) 25. 75 



Potash (K2O) .32 



Soda (Na^O) 1.24 



100. 04 



1 Of the entire mass. 



