a Mineral from Faroe. 



51 



Silica, . 



c, . 



13.88 







e, . 



2 







h, . 



7 







1, . 



27 



14 24 



Lime, . 



g> • 



6.602 



i. Tj. /-vT 





i, . 



11 



6611 



Soda, 



k, . 



.109 



.109 



Potash, 



*, . 



.058 



.058 



Oxide of Iron, 



f, ■ 



.04 







I, . 



.04 



.08 



Oxide of Manganese, 



f, • 



.046 





g* 



.009 



*»*> 







• t/t/ 



And in 100 parts, 



21.650 



Silica, . 



57.69 



Lime, . . . 



26.83 



Water, , 



14.71 



Soda, 



0.44 



Potash, 



0.23 



Oxide of Iron, 



0.32 



Oxide of Manganese, 



0.22 



100.44 



The above composition differs, so far as my information ex- 

 tends, from that of all other known minerals ; and shews the 

 mineral under analysis to be essentially a hydrated quatersili- 

 cate of lime. Its constitution is expressed by the formula 

 9 S 4 C + 16 Aq, which gives 



Silica, 

 Lime, 

 Water, 



58.06 

 26.85 

 15.08 



99.99 

 G 2 



