Prof. Berzelius on Meteoric Stones, 433 



An alloy of iron and nickel, containing cobalt, tin, 



copper, sulphur, and phosphorus 17*15 



Of a silicate of magnesia and protoxide of iron, in 

 which the silica contains as much oxygen as the 



bases, with a little sulphuret of iron 42*67 



Of silicate of magnesia and protoxide of iron, mixed 

 with silicates of potash, soda, lime, and alumina, 

 in which the silica contains twice as much oxy- 

 gen as the bases 39"43 



Of chrome and iron mixed with tin-stone '15 



It can hardly be doubted that the relative quantities of the 

 constituent parts of this mixture vary in different fragments of 

 the stone*. 



Meteoric Stone of Chantonnay . — This stone fell at two o'clock 

 in the morning of the 5th of August 1812, not far from Chan- 

 tonnay, in the department of La Vendee : a fragment was 

 sent to M. Berzelius by the late M. Lucas, a French minera- 

 logist. It is not affected by the magnet, and, like the non- 

 magnetic portion of the Blansko meteorite, contains in 100 

 parts, 51*12 parts soluble in acids, and 48 '88 parts insoluble 

 in these agents. The portion dissolved contained : 



Silica 32-607 



Magnesia 34*357 



Protoxide of iron 28*801 



Protoxide of manganese *S21 



Oxide of nickel combined with 1 , __ 



45o 



} 



oxide of copper and tin 



Potash and soda '977 



Loss 1*971 



100* 

 The portion insoluble in acids is composed of 



Silica 56*252 



Magnesia 20-396 



Lime 3*106 



Protoxide of iron 9-723 



Protoxide of manganese "690 



Oxide of nickel with oxide ofl ,„q 



■} 



tin and copper 



Alumina 6 02^ 



Soda 1-000 



Potash -512 



Chrome and iron 1-100 



Loss 1-070 



100* 



• In tl)is abstract no notice is taken of the protoxide of manganese men- 

 tioned in the analyses of the non-magnetic portion. — J. I). S. 

 Third Series'. Vol, 9. No. 56. Dec. 1836. 3 F 



