HANDBOOK OF THE METEORITE COLLECTIONS. 



153 



May 22, 1808, at 6 a. m. Some 200 to 300 individuals fell, strewed 

 over an area some 8 by 3 miles, and estimated to weigh 52 kilograms. 

 Chemical analyses by Rammelsberg yielded : 



Constituents. 



SUica(SiOj) 



Alumina (AI2O3). 



Iron oxide 



Manganese oxide. 



Lime(CaO) 



Magnesia (MgO). 



Soda(Na20) 



Potash (K2O).... 

 Chromlte 



A. 34.98 

 per cent 

 soluble 

 in HCl. 



Per cent. 

 46.19 

 31.26 

 2.93 



16.98 



1.12 



1.14 



.50 



100.12 



B. 65.02 

 per cent 

 insoluble. 



Per cent. 



49.44 



2.64 



28.31 



1.25 



8.20 



9.97 



.35 



.10 



.83 



101.09 



Later analysis by J. E. Whitfield, made with especial reference to 

 the possible occurrence of barium, strontium, and zirconium, yielded : 



Per cent. 



Silica (SiOi) 47.94 



Alumina (AhOs) 11.19 



Titanium oxide . 41 



Zirconium oxide (Zr02) None. 



Phosphoric acid (P2O5) .14 



Chromic oxide (Cr203) .35 



Ferric oxide (FcsOs) 1.20 



• Ferrous oxide (FeO) 1 18.97 



Barium oxide (BaO) None. 



Strontium oxide (SrO) None. 



Nickel oxide (NiO) .25 



Cobalt oxide (CoO) Trace. 



Ferrous sulphide (FeS) .86 



Lime (CaO) 10.36 



Magnesia (MgO) 7.14 



Soda (NajO) .75 



Potash (K2O) .13 



Water (above 104° C.) (H2O) .30 



99.99 



The mineral nature and structure of the stone has been described 

 by Tschermak, who found it a somewhat variable admixture of frag- 

 mentary matter, consisting mainly of the silicates anorthite and 

 augite, with small, colorless, weakly refracting particles of an unde- 

 termined nature; in addition, nickel-iron, pyrrhotite and chromite. 



