HANDBOOK OF THE METEORITE COLLECTIOlSrS, 149 



SHALKA, NEAR BISSEMPORE IN BANCOORAH, BENCAL, INDIA. No. 244. 



Stone, Chi. Weight, 53 grams. Fragment with crust. Fell three 

 hours before sunrise on the morning of November 30, 1850. The 

 weight of the original mass is not known, some 3,626 grams only 

 being -accounted for in Wiilfing's catalogue. 



Composition, according to H. B. von Foullon : SiOg, 52.51 ; CrjOg, 

 1.25; FeO, 16.81; Al^Os, 0.66; CaO, 0.89; MgO, 28.35; NaO, 0.22; 

 S, 0,14; Fe, 0.25; P, trace. The mineral composition as given is 

 bronzite, with inclosures of chromite, dark and light brown glass, 

 picotite ( ? ) , and a little pyrrhotite. No native iron. The structure 

 is remarkably coarsely granular; color light ash gray. 



Reference. — H. B. von Foullon, Ann. k. k. Naturhist, Hofmus., 

 vol. 3, 1885, p. 195. This gives a full review of all previous work. 



SHELBTTRNE, GREY COUNTY, ONTARIO, CANADA. No. 358. 



Stone, Cga. Fragment weighing 578 grams from one of two stones 

 which fell on the evening of August 13, 1904. The stones weighed, 

 respectively, 12.6 kilograms and 6 kilograms, or together 40f pounds. 

 Though the stones fell with such force as to penetrate the ground to 

 a depth of 2 feet, the heat was so slight that a green burdock leaf 

 carried by it into the ground was still green and uncharred when 

 disinterred. An analysis as given by L. H. Borgstrom yielded : 



Per cent. 



Silica (SiOO 39.19 



Iron (Fe) 10.70 



Nickel (Ni) .78 



Cobalt (Co) .04 



Ferrous oxide (FeO) 15.16 



Manganous oxide (MuO) .12 



Alumina (ALOs) 2.15 



Chromic oxide (CriOa) .62 



Lime (CaO) 1.75 



Magnesia (MgO) 26.24 



Potash (K2O) .22 



Soda (Na^O) .73 



Sulphur (S) 1.61 



Phosphorus (P) .06 



99.37 

 From the analysis and microscopic examination it was possible to 

 calculate the mineral composition, as follows : 



Per cent. 



Nickel-iron 8. 50 



Troilite . 4. 50 



Chromite . 80 



Schreibersite . 40 



Olivine 45. 00 



Enstatite 27. 80 



Maskelynite (?) 13.00 



100.00 



