No.i) RESEARCHES ON METEORITES— MERRILL. 21 



Iron (Fe) 2. 391 Percent. 



Sulphur (S) 1.4lJ TroiUte... 3.80 



9!). 94 99. 94 



No trace of barium, strontium, lithium, soda, potash, zirconium, or copper, could be 

 discovered. 



(17) Meteoric stone, CTiondrite (Ci).— Ness Comity, Kans. Described by H. L. Ward." No 

 analysis given. The stone was somewhat decomposed through weathering, but yielded approx- 

 imately 15 per cent of nickeliferous iron which showed: 



Per cent. 



Copper 0. 30 



Nickel 7. 00 



Cobalt 20 



Iron 92.04 



99.54 



A bulk analysis in which all the combined and oxidized iron was determined as ferric oxide, 

 yielded: 



Per cent. 



Smca(Si02) 38.340 



Ferric o.xide (FejOj) 8. 551 



Alumina (AI2O3) 8. 259 



Chromic oxide (Ct^O^) 587 



Lime (CaO) 1. 180 



Magnesia (MgO) 24. 040 



Metal (FeNi) 15. 000 



Loss on ignition 3. 500 



99. 457 



Recalculating the first analysis in order to include the components of the metallic portions, 

 and thus obtain the composition of the stone as a whole, we have: 



Per cent. 



Silica (SiOj) 38. 340 



Ferric oxide (FejOj) 8. 551 



Alumina (AI3O3) 8.259 



Chromic oxide (CrjOs) 587 



Lime (CaO) 1. 180 



Magnesia (MgO) 24. 040 



Loss on ignition 3. 500 



Iron (Fe) 13. 860 



Nickel (Ni) 1.050 



Cobalt (Co) 030 



Copper (Cu) 050 



99.447 



None of the rarer elements were found. The high ignition is due largely to the hydrous 

 sesquioxide of iron formed through weathering. 



(18) Meteoric stone, Chondrite (Cc). — Selma. Ala. Described by Merrill* but no analyses 

 given. Examination of thin sections showed the presence of the usual sulphide particles to- 

 gether with olivine, enstatite, and a monoclinic pyroxene. 



A bulk analysis as given in my preliminary report was so unsatisfactory, particularly 

 with reference to the iron and alkali content, that additional material was selected and new 

 analyses made with results as given below. No metallic iron could be detected, though whetber 

 or not this was due to oxidation, as seems probable from the high content of ferric oxide and 

 water, could not be determined. 



a Amer. Journ. Sci , vol. 7, 1899, p. 233. t Proc. V . S. Nat. Mus., vol. 32, 1907, p. 59. 



