302 
ANALYSES OF KOCKS, U. S. GEOLOGICAL SUEVEY. [no. 228. 
MASSACHUSETTS. 
A. White marble, Lee. Analysis by E. A. Schneider, record No. 
1279. Described by Diller in Bull. 150, p. 299. P. R. C. 116. 
B. Limestone, Lee. Collected by B. K. Emerson. From cut on 
west side of railroad. Analysis by George Steiger, record No. 1651. 
C. Dolomite, Charlemont. Collected by Emerson. Analysis by 
Eakins, record No. 1313. 
D. Dolomite, Webster. Collected by Emerson. Analysis by H. N. 
Stokes, record No. 1631. 
A. 
B. 
c. 
D. 
.19 
SiO., 
.95 
.09 
none 
.10 
.67 
trace 
.08 
7.60 
1.61 
.03 
28. 63 
16.17 
45. 35 
1.01 
A1 2 3 
} - 24 
.17 
Fe 2 3 
none 
FeO 
.37 
MnO 
.08 
NiO 
CaO 
30. 88 
21.42 
54.75 
.56 
.15 
.02 
.08 
.03 
43.38 
.05 
30.82 
MgO 
21.35 
K 2 
.10 
Na 2 - 
.01 
H 2 
.09 
P 2 5 
.06 
CO, 
46.72 
45. 84 
S0 3 
99.45 
100. 16 
100. 14 
99.90 
