:larke.] ANALYSES OF ROCKS, U. S. GEOLOGICAL SURVEY. 
801 
THE CARBONATE ROCKS: EIMESTONE, DOLOMITE, 
S1DERITE, ETC. 
VERMONT. 
A. White marble, Rutland. Analysis by L. G. Eakins, record 
No. 1213. 
B. The portion of A insoluble in dilute hydrochloric acid. Same 
analyst and number. 
C. Dolomite, Green Peak quarry, Dorset. Analysis b}^ George 
Steiger, record No. 1938. Described by Dale in Bull. 195. 
A. 
B. 
c. 
Insoluble 
8.00 
Si0 2 
56. 69 
31.16 
8.36 
A1 2 3 
.39 
1.77 
Fe 2 3 
.22 
FeO 
.14 
trace 
50.79 
2.13 
3.27 
2.68 
undet. 
nndet. 
1.08 
MgO 
16.68 
CaO 
29.03 
Na 2 
.06 
K 2 
1.08 
H 2 at 105° . 
| 1. 01 
39.80 
.03 
H 2 above 105° 
.42 
CO., 
41.66 
100. 13 
95.93 
100. 39 
