HANDBOOK OF THE METEORITE COLLECTIONS. 



49 



17,082 gi-ams and 23,628 grams, which fell July 14, 1847. This iron 

 is of interest, being one of the very few which have been seen to fall, 

 and, further, because of its hexahedral structure. The chemical 

 analysis made by Fischer and Duflos is unsatisfactory. 



Reference. — C. C. Beinert, Der Meteorit von Braunau, Breslau, 

 1848. 



BREMERVORDE, GNARRENBTIRG, HANOVER, GERMANY. No. 144. 



Stone, Ccb. Fragment weighing 2 grams, from a mass weighing 

 1\ kilograms, which fell May 13, 1855. 



BRENHAM, KIOWA COUNTY, KANSAS. Nos. 154, 161, 266, 271, 280, 337. 



Stony-iron, Pallasite. Weights 261, 326, 463, and 551 grams; 

 also slice 31 by 25 cm., weighing 4.37 kilograms, and one complete 

 individual weighing 17.27 kilograms. Date of fall unknown : found 

 in 1885 when the prairie was first plowed. Over 20 individuals were 

 found, weighing in the aggregate upward of 2,000 pounds, or about 

 909 kilograms, the largest individual weighing 466 pounds, or 211.8 

 kilograms. The relative proportions of olivine and iron are quite 

 variable. (See pi. 11, fig. 1.) A polished surface shows large 

 rounded blebs of gi'eenish olivine imbedded in a groundmass of 

 metallic iron. Occasional rounded masses of a bronze-colored troilite 

 are evident, and there is a peculiar black lustrous border about the 

 olivines which, as shown by Eakin's analyses, was evidently an iron- 

 rich variety of the same mineral. 



The chemical composition of the two chief constituents, as shown 

 by analyses, is as follows: 



Constituents. 



IKON. 



Iron(Fe) 



Nickel (Ni) 



Cobalt{Co) 



Copper (Cu) 



Phosphorus ( P) 



Sulphur(S) 



Carbon(C) 



Silicon (Si) 



OLIVINE. 



SiUca(SiO,) 



Alumina (A IjOs) 



Ferric oxide (FbsOs) 



Ferrous oxide ( FeO) 



Nickel oxide (NiO) 



Manganous oxide (MnO) 

 Magnesia (MgO) 



Eakins. Dodge, 



Per cent. 



88.49 



10.35 



.57 



.03 



.14 



.08 



Trace. 



Trace. 



99.66 



40.70 



Trace. 



.18 



10.79 

 .02 

 .14 



48.02 



99. 85 



Per cent. 



90.48 



8.59 



.16 



Trace. 



.27 



.05 



Trace. 



.24 



99.79 



.77 

 10.51 



47.18 



5692"— Bull. 94—16- 



