a Mineral from Faroe. 
Silica, . ' : C, 
e, 
h, 
d, 
Lime, . . : 2 
4, 
Soda, k, 
Potash, F k, 
Oxide of Iron, s off 
1, 
Oxide of Manganese, f, 
And in 100 parts, 
Silica, 
Lime, 
Water, 
Soda, 
Potash, 
Oxide of Iron, 
Oxide of Manganese, 
13.88 
2 
7 
Q7 
14.24 
6.613 
109 109 
058 058 
08 
55 
21.650 
57.69 
26.83 
14.71 
0.44 
0.23 
0.32 
0.22 
100.44 
51 
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* C+ 16 Aq, which gives 
Silica, 
Lime, 
Water, 
58.06 
26.85 
15.08 
99.99 
eZ 
