HANDBOOK OF THE METEORITE COLLECTIONS, 81 



Refei^ence. — A. E. Nordenskiold, Koiigl. Sven. Vet.-Akad. llandl., 

 vol. 8, No. 9, 1870. 



HEX RIVER, CAPE COLONY, SOUTH AFRICA. No. 311. 



Iron. H. AVeight 332 grains. A nearly rectangular slab some 

 80 by 90 by 6 mm.; etched. Date of fall unknown; found in 1882 

 and described in 1885. Original weight unknown; 37,704 grams 

 are now in the museum at Vienna and some 7,960 grams are dis- 

 tributed in other collections, making a total weight of 45,644 grams. 

 Analyses, as given by Cohen and AVeinschenk.^ showed : Iron, 93.33 ; 

 nickel, 5.58; cobalt, 0.84; schreibersite, 0.94. 



Reference.— Sqq Wiilfing, p. 143. 



HOLBROOK, NAVAJO COUNTY, ARIZONA. Nos. 437, 442. 



Stone, Cck. Four nearly complete individuals, weighing 1,035, 

 895, 447, and 1,120 grams. (PI. 25, fig. 1.) Fell Friday, July 19, 

 1912, 7.15 p. m. Several hundred individuals found weighing up- 

 ward of 218 kilograms, or about 481 pounds. Compact, light gray 

 chondritic stone showing very little metal, but comparatively numer- 

 ous nodules of troilite. Mineral composition, olivine with mono- 

 clinic and orthorhombic pyroxenes and a small amount of glassy 

 material which may be maskelynite. Chemical analysis gave results 

 as below: 



Ter cent. 



Schreibersite 0. 11 



Troilite 7. 56 



Motul ^ 4. 85 



Silicates 87. 4S 



100. 00 

 The metallic portion yielded : 



Nicliel (Ni) 8.68 



Cobalt (Co)__ .64 



Copper (Cu) .29 



Iron (Fe) 90.50 



100. 11 

 The silicate portion yielded : 



Silica (SiOj) 41.93 



Alumina (AUOa) 4.30 



Ferrous oxide (FeO) 21.85 



Lime (CaO) 2.40 



Magnesia (MgO) 29.11 



Soda (NaaO) Trace. 



Manganous oxide (MnO) 0.25 



Nickel oxide (NiO) .08 



99.92 



'Ann. k. k. Naturhist. Hofmus., vol. 6, 1891, p. 143. 

 5692°— Bull. 94—16 6 



