358 ANALYSER OF ROCKS, IT. S. GEOLOGICAL SURVEY. [no. 221 
KENTUCKY, TENNESSEE. 
A. Fire clay, Carter County, Kentucky. Analysis by F. W. Clarke, 
record No. 2073. 
B. Black clay, Mandle's pit, Paris, Tennessee. 
C. Ball clay, same locality as B. 
Analyses B and C by E. C. Sullivan, record No. 2105. 
D. Clay, east of Parsons, Tennessee. 
E. Clay, Robins and Henderson pit, Pinson, Tennessee. 
Analyses D and E by W. T. Schaller, record No. 2107. 
All analyses partial only. 
Si0 2 
A1 2 3 
Fe 2 3 (total Fe).. 
MgO ... 
CaO 
K 2 (total alkali) 
Ignition 
Ti0 2 
SO a 
42. 71 
38. 88 
::. 36 
none 
. L3 
undet. 
15.15) 
undet. 
100. 2) 
46. 34 
30.30 
1.19 
.34 
.24 
.78 
19.68 
1.42 
trace 
100. 29 
c. 
52. 31 
30.09 
1.29 
.38 
.13 
1.72 
12.44 
1.10 
trace 
99. 46 
D. 
70. 76 
19.29 
1.09 
.68 
.14 
undet. 
6.02 
undet. 
trace 
97. 98 
70.56 
18. 18 
1.30 
.55 
.08 
undet. 
8.13 
undet. 
trace 
98. 80 
