174 
CEMENT MATERIALS AND INDUSTRY. 
[BULL. 
1 
and Livingston counties, in western Kentucky. Between the tirs 
strip and the border of the western Kentucky coal field there is fii 
a broad strip of St. Louis limestone, which is usually too siliceous anc 
too magnesian for use in making Portland cement, and then, near <j 
just outside of the coal field, the limestones, shales, and sandstones q 
the Chester group. 
The Chester contains several beds of apparently promising limj 
stone closely associated with beds of shale. 
No good limestones occur in west-central Tennessee except in Mo 
gomery and Robertson counties, where the lower oolite is presen 
However, the St. Louis limestone here, as also in Kentucky, contai 
many beds of only slightly siliceous and probably nonmagnesial 
limestone. 
Of the analyses below, Nos. 1 and 7 are Spergen Hill oolite 
Nos. 3, 5, and 6 St. Louis limestone, and 2, 4, and 8 Chester limestone! 
though the last is extraordinarily pure for a Chester limestone. 
Analyses of Upper Mississippian limestones from Kentucky. a 
[R. Peter, analyst.] 
I 
No. 
I 
2 
3 
4 
5 
6 
7 
8 
Silica 
(Si0 2 ). 
] . 06 
2.76 
3.06 
7. -is 
9.56 
4.46 
.38 
.49 
Alumina 
(A1,0,): 
iron oxide 
(Fe,0 3 ). 
0. 51 
.92 
1.39 
2. 56 
.15 
1.49 
.46 
.22 
Lime 
carbonate 
(CaCQ 3 ). 
98.05 
93.02 
95.15 
85. 68 
88.15 
92. 05 
98.58 
97. 63 
Magnesium 
carbonate 
(MgC0 3 ). 
0.36 
2.09 
.24 
2.50 
.38 
.22 
.63 
.65 
Alkalies 
(K 2 0, Na 2 0). 
0.44 
not (let. 
not det. 
.36 
not det. 
not det. 
.18 
not det. 
Sulphu 
trioxid 
(S0 3 ) 

Tra. 
1. Glasgow Junction, Barren County. 
2. Barren River, Butler County. 
3. Iron Hills Furnace, Carter County. 
4. Grayson County. 
5. < >ld Town Creek, Greenup County 
6. Kenton Furnace, Greenup County 
7. Hardin County. 
8. Litchfield, Grayson County. 
A number of limestone beds occur interbedded with the shales an ir 
sandstones of the Coal Measures. These Coal Measures limestones ai I 
usually low in magnesia, but rarely carry more than 80 to 90 per cell 
of lime carbonate. Compared with the thick series of lower Carbo 
niferous limestones, they are so thin that they would be of hut littl 
importance if it were not for their advantageous location near sui 
plies of fuel. 
"Analyses 1 to 7 from Kentucky Geol. Survey, Rept. A,/~pt. 2, pp. 119-120; analysis 8 fro* 
Twentieth Ann. Rept. U. S. Geol. Survey, pt. 6, p. 545. 
