:c-ki:i.- I LOUISIANA. 
Analyses of Coal Measure limestones from Kentucky. 
175 
No. 
Silica 
(Si0 2 ). 
Alumina 
(A1 2 3 ); 
iron oxide 
(Fe,0 ;J ). 
Lime 
carbonate 
(CaC0 3 ). 
Magnesium 
carbonate 
(MgC0 3 ). 
Alkalies 
(K,O.Xa,Oi. 
Sulphur 
trioxide 
(S0 3 ). 
14.70 
5.96 
3.28 
4.26 
1.15 
6.40 
3. 76 
1.76 
4: 33 
.65 
75. 75 
88.41 
88. 38 
82.88 
97. 15 
0. 57 
.79 
3. 68 
4.20 
. 93 
n. d. 
0.51 
. 35 
.29 
0. 78 
.04 
. 17 

4.72 
Analyses 1 to 4 (by R. Peter) from Kentucky Geol. Survey, Rept. A. pt. 'J, p. 119; analysis 5 
jmmumcated by F. E. Hayward. 
1. Mount Savage Furnace, Carter County. 
2. Pea Ridge, Greenup County. 
3. Henderson County. 
1. Muhlenberg County. 
5. Hayward, Carter County. 
PORTLAND-CEMENT RESOURCES OF LOUISIANA. 
The great chalk formations, which seem destined to be such impor- 
mt sources of Portland-cement material in the neighboring States of 
exas, Arkansas, Mississippi, and Alabama, fail to occur in Louisiana 
xcept as small isolated outcrops. The State is therefore practically 
evoid of -limestone and can hardly be considered as a possible future 
oducer of Portland cement. The few limestone outcrops that 
ppear within its limits are described as follows: a 
Cretaceous limestones. — The beds of limestone seem to be almost entirely confined 
the Cretaceous. Of the three outcrops which occur in the State, the Winnfield 
nestone is of very doubtful value as a building stone, but the Coochie Brake and 
ayou Chicot deposits may be utilized for that purpose. 
The Winnfield limestone is a highly crystallized blue and white banded stone. It 
full of cracks and pockets and other flaws, which Avill render it useless as an 
■namental or building stone. It can doubtless be used to advantage for making 
lie. The quantity of the stone in sight is large and it can be very economically 
larried. Several kilns of lime have already been burned there. 
The purity of the stone is shown by the following analysis by Dr. W. F. Hille- 
-and, & of the United States Geological Survey: 
Analysis of limestone from Winnfield. 
lica (Si0 2 ) .....' 0. 65 
lumina ( A1 2 3 ) Trace. 
on oxide ( Fe 2 3 ) Trace. 
me (CaO) . .". 55. 01 
agnesia (MgO) 60 
lphur trioxide (S0 3 ) 27 
irbon dioxide (C0 2 ) 43. 43 
ater 13 
a Report Geol. Survey Louisiana for 1899, pp. 130-131. 
bBull. U. S. Geol. Survey No. 60, p. 160. 
