SLATES AM) SHALES. 
279 
G. Unfading- green, Valley Slate Company's quarry, Poultney 
H. Mottled, purple and green, Eureka quarry, Poultney. 
I. Purple, 1 mile south of Hydeville, in Cast let on. 
G. 
H. 
I. 
Si0 2 
59. 48 
18.22 
1.24 
6.8] 
2.50 
.56 
1.55 
3. 81 
.17 
4.05 
1.02 
.10 
.07 
.05 
.39 
.13 
.08 
.03 
60.24 
18.46 
2.56 
5.18 
2.33 
.33 
1.57 
4.09 
.18 
3.81 
.92 
.11 
.07 
.03 
.08 
.16 
undet. 
.03 
60.96 
16.15 
5.16 
2.54 
3.06 
.71 
1.50 
5.01 
.17 
3. 08 
.86 
.23 
.07 
.04 
.68 
none 
undet. 
.01 
A1 2 8 
Fe 2 3 
FeO 
MgO 
CaO 
Na 2 
K 2 
H 2 0at 110° 
H 2 above 110° 
Ti0 2 
P 2 5 
MnO 
BaO 
C0 2 
FeS 2 
F 
N, as NH 3 
100. 26 
100. 15 
100.23 
All three contain traces of lithia, nickel, and chlorine, and possibly of zirconia; in 
jr and H traces of strontia, but none in I. 
