CLARKE.] 
CARBONATE ROCKS. 
GEORGIA. 
255 
A. Marble, Happy Valley. 
B. u Creole" marble, Happy Valley. 
C. Portion of B insoluble in dilute hydrochloric acid. 
D. " Cherokee " marble, Happy Valley. 
E. Portion of D insoluble in dilute hydrochloric acid. 
Analyses by L. G. Eakins, record Nos. 464, 485. 
A. 
B. 
C. 
I). 
E. 
Insoluble 
1.84 
2.01 
Si0 2 
2.23 
.91 
.22 
58. 21 
7.37 
55.48 
15. 58 
A1 2 3 
_ .17 
.15 
Fe 2 3 
FeO 
.05 
53. 91 
.83 
.13 
43.16 
.31 
12. 53 
20.42 
.06 
53. 69 
.83 
.17 
43. 13 
trace 
14. 52 
12-. 88 
CaO 
52. 16 
2.09 
.45 
42.22 
MgO 
H 2 
co 2 
100. 28 
99. 69 
98.84 
100. 04 
98. 46 
FLORIDA. 
1. CORAL AND SHELL ROCKS, COLLECTED BY N. S. SHALER. 
Partial analyses only. Chlorides and sulphates present; alkalies 
md phosphates not looked for. 
A, B, C, D. Coquina gravel, Tortugas. 
E. The same, Key West. 
Analyses by F. W. Clarke, record No. 878. 
A. 
B. 
c. 
D. 
E. 
Si0 2 
.19 
.19 
52. 24 
1.53 
41.46 
3.27 
.22 
.47 
51. 24 
2.09 
41.07 
3. 57 
.32 
.56 
49.38 
1.93 
40.:;'.» 
5.12 
.21 
.76 
51. 95 
1.44 
41.53 
3.07 
.25 
.56 
51.52 
2.08 
41. 58 
3.19 
ALA, FeA 
CaO 
MgO : 
co 2 
H 2 
98.88 
98.66 
97.70 
98. 96 
99.18 
