The Rev. S. Haughton's Notes on Mineralogy. 267 



grs. 



Silica 18-95 



Alumina 0*14 



Peroxide of iron* . . . . 14* 11 

 Carbonate of lime . . . none 

 Pyrophosphate of magnesia . 51*31 

 Potash and soda chlorides . 0*30 

 Platinochloride of potassium 0*20 

 Oxide of manganese (Mn 3 4 ) 0*66 

 On treating another 100 grs. of the meteorite for sulphur by 

 boiling in muriatic acid, and conducting the sulphuretted hydro- 

 gen into an ammoniacal solution of sulphate of copper, so as 

 to form a black precipitate of sulphuret of copper, there were 

 found by the usual methods 14*8 grs. of sulphate of barytes. 



There were left, after treatment with iodine, muriatic acid, and 

 carbonate of soda, 38*3 grs. of the 100 grs. originally acted upon. 

 From the foregoing facts, we readily obtain, from the treatment 

 with iodine and for sulphur — 



grs. grs. 



Peroxide of iron . . . 9'85 6*88 iron. 



Protoxide of nickel . . 1*96 1*54 nickel. [iron. 



Sulphate of barytes . . 14*80 5-61 protosulphuret of 

 Hence we find, as the primary analysis of the meteorite, — 



1. Primary Analysis. 



1. Metallic iron 6-88 



2. Metallic nickel .... 1*54 



3. Magnetic pyrites . . . . 5*61 



4. Earthy mineral (soluble) . 47*67 



5. Earthy mineral (insoluble) . 38*30 



lOCHX) 

 The results of the analysis of the soluble portion (considering 

 that 5*61 of FeS is equivalent to 5*10 of Fe 2 O 3 ) give the fol- 

 lowing: — 



2. Earthy Mineral [soluble). 



grs. Per cent. Oxygen. 



1. Silica 18*95 39*75 20*637 



2. Alumina 0*14 0*29 0*135 



3. Protoxide of iron . . . 8*10 16*99 3*768 



4. Protoxide of manganese . 0*66 1*38 0*308 



5. Lime none 



6. Magnesia 18*34 38*47 15*374 



7. Potash 0*04 0*10 0*016 



8. Soda 0*13 0*28 0*071 



9. Loss i-Sl 2*74 



47*67 100*00 40*309 



* Present originally as protoxide and protosulphuret of iron. 



