32 



BULLETIN 94, UNITED STATES NATIONAL MUSEUM. 



in 1873. An ash-gray groimdmass flecked with rust and containing 

 numerous metallic grains ; traversed with slickensided veins. 



ALFIANELLO, PROVINCE OF BEESCIA, IT ALT. Nos. 71, 466, 497. 



Stone, Ci. Three fragments weighing, respectively, 61.3, 134, and 

 17 grams, with and without crust. Showing ash-gray groundmass 

 flecked with rust spots and carrying chondrules and metallic grains. 

 Fell at 2.55 p. m. February 16, 1883, traveling in a south-southeast 

 direction, but, through some unaccountable reaison, burying itself 

 obliquely in the soil to the depth of a meter in an opposite direction. 

 The grass in the vicinity of the hole is stated to have been singed 

 and the stone still warm when dug up. Orignal weight 260 kilograms. 



The results of analyses as given by chemists are somewhat variable. 

 In column I below are those of H. von Foullon, and in column II those 

 of P. Maissen: 



Constituents. 



snica(SiOi) 



Alumina ( AljOs) 



Ferrous oxide ( FeO) 



Magnesia (MgO) 



Lime(CaO) 



Soda(NasO) 



Potash (K2O) 



Iron(Fe) 



Nickel (Ni) 



Cobalt(Co) 



Sulphur(S) 



Phosphorus (P) 



Chromic oxide (CrjOs) . . . 

 Manganous oxide (MnO). 



39.14 



.93 



17.42 



25.01 



1.90 



.75 



.10 



11.31 



1.09 



2.71 



100.42 



II. 



37.63 



1.78 



24.42 



23.43 



.89 



1.09 



.24 



5.76 



1.14 



.08 



2.54 



.15 



.10 



.13 



199.38 



1 Record also CrOs 0.629. 



The mineral composition, as calculated from these analyses, is: 



Per cent. 



Bronzite and feldspar (maskelynite) 41. 37 



Olivine 43. 77 



Nickel-iron 7. 66 



Pyrrhotite 7. 45 



100. 25 

 There are present also a phosphatic mineral and granules of 

 chromic iron. 



References. — H. von Foullon, Sitz. Akad. Wiss. Wien, vol. 88, 1883, 

 p. 433. P. Maissen, Gazz. Chim. Ital., vol. 13, 1884, p. 369. George 

 P. Merrm, Proc. Nat. Acad. Sci., vol 1, 1915, pp. 302-308. 



