136 BULLETIN 94, UNITED STATES NATIONAL MUSEUM. 



Missouri. This was described by Shepard as an octahedral iron 

 rich in schreibersite. Specific gravity, 7.0X5 to 7.112. The analysis 

 yielded : 



Per cent. 



Iron (Fe) 92.10 



Nickel (Ni) 2.60 



Schreibersite 5-00 



99.70 



Later a larger mass (weight not given) was found in St. Francois 

 County, which is regarded as identical with that described above. 

 This, according to Dr. J. Fahrenhorst's analyses, consists of : 



Per cent. 



Iron (Fe) 92.68 



Nickel (Ni) 6.97 



Cobalt (Co) -52 



Copper (Cu) -92 



ChromiHm (Cr) -90 



Chlorine (CI) -^3 



Sulphur (S) -01 



Phosphorus (P) -34 



Silicate granules • ^^ 



100. 58 

 From this he calculates the mineral composition as follows: 



Per cent. 



Nickel-iron 97. 71 



Schreibersite 2. 20 



Troilite -^^ 



Lawrencite • ^^ 



Silicates 



.01 



100.00 

 Specific gravity of mass, 7.74G at 1G° C. ; specific gravity of nickel- 

 iron, 7.7728. 



References.— C. U. Shepard, Amer. Journ. Sci., vol. 47, 18G9, p. 

 230. E. Cohen, Ann. k. k. Naturhist. Hofmus., vol 15, 1900, p 369. 



BAINTE GENEVIEVE COUNTY, MISSOURI. No. 454. 



Iron, Of. Triangular slice 55 by 35 by 15 mm., weighing 129 

 grams, from a mass weighing 539 pounds (244 kilograms), found in 

 1888. Chemical analysis by J. E. Whitfield yielded : 



Per cent. 



Iron (Fe) 91.58 



Nickel (Ni) 7.98 



Cobalt (Co) -29 



Silicon (Si) • 023 



Phosphorus (P) -200 



Sulphur (S) --— Trace. 



Carbon (C) ^0^ ^- 



100. 073 



