ANALYSES OF MINERALS. 3Qj 



Granular chromated iron from Styrra. Chrom*t»cf 



Oxide of chrome 55*5 iroftv 



' iron 33 



Al amine 6 



Silex 2 



Loss in roasting ........ 2 



98-5 

 Black manganese from Klapperud in Dalecarlia. Mantfane&s. 



Oxide of raaganese 60 



Silex 25 



Water 13 



98 

 Cerite from N Bastnae8 in Sweden. , 



Oxide of cerium 54*50 



Silex 34-50 



Oxide of iron 3*50 



Lime 1*25 



Water 5 ^ 



98*75 

 A fire-coloured opal, brought by Humboldt from Zima- Fire-coloured 

 pan, in Peru. opal fromPeru. 



Silex 92 



Water 7*75 



Oxide of iron 0*25 



100 

 Brazilian topaz. BratiHan 



Silex . . . . i 44*5 topaa. 



Alumine 47*5 



Oxide of iron 0*5 



Fluoric acid r . . 7 



99'$ 

 Saxon topaz. . l»ou to«u, 



Silex 35 



Alumine 59 



Fluoric acid 5 



Oxide of iron a trace 1 



100 

 Vot. XXXII.— Auoust 1812, Y CrystallizW 



