252 ANALYSES OF ROCKS, U. S. GEOLOGICAL SURVEY. [bull. 168. 
THE CARBONATE ROCKS: LIMESTONE, DOLOMITE, 
SIDERITE, ETC. 
VERMONT AND MASSACHUSETTS. 
A. White marble, Rutland, Vermont. Analysis by L. G. Eakins, 
record No. 1213. 
B. The portion of A insoluble in dilute hydrochloric acid. Same 
analyst and number. 
C. White marble, Lee, Massachusetts. Analysis by E. A. Schneider, 
record No. 1279. Described by Diller in Bull. 150, p. 299. P. R. C. 
116. 
D. Limestone, Lee, Massachusetts. Collected by B. K. Emerson. 
From cut on west side of railroad. Analysis by George Steiger, 
record No. 1654. 
E. Dolomite, Charlemont, Massachusetts. Collected by Emerson. 
Analysis by Eakins, record No. 1343. 
F. Dolomite, Webster, Massachusetts. Collected by Emerson. 
Analysis by H. N. Stokes, record No. 1634. 
A. 
B. 
c. 
D. 
E. 
F. 
Insoluble . 
Si0 2 
8.00 
.19 
56. 69 
31.16 
.95 
.09 
none 
.10 
.67 
trace 
.08 
7.60 
1.61 
.03 
28. 63 
16. 17 
1.01 
.17 
none 
.37 
.08 
A1A 
Fe 2 3 
.39 
! - 
FeO 
MnO 
.14 
2.13 
NiO 
CaO 
MgO 
K 2 
50. 79 
trace 
2.68 
3.27 
undet. 
undet. 
30. 88 
21.42 
54. 75 
.56 
.15 
.02 
.08 
.03 
43. 38 
.05 
30.82 
21.35 
.10 
.01 
.09 
.06 
45.84 
Na 2 
H 2 
P9O* 
1.01 
co 2 
so, 
39. 80 
46.72 
45.35 
100. 13 
95.93 
99.45 
100. 16 
100. 14 
99.90 
