272 CEMENT MATERIALS AND INDUSTRY. [bull. 243 
The analyses below have been selected as representing the low-mag 
nesia beds which occur in this formation: 
Analyses of Corniferous limestones, Ohio. 
No. 
Silica 
(Si0 2 ). 
Alumina 
(AloO,): 
iron oxide 
(Fe 2 3 ). 
Lime car- 
bonate 
(CaC0 8 ). 
Magnesiu 
rarbonat 
(MgC0 3 j 
1 
3.20 
0.80 
1.74 
.09 
.46 
3.80 
2.80 
1.20 
2.10 
4.00 
6.01 
.27 
94.80 
93. 21 
89.60 
90.77 
88. 40 
72.82 
65.80 
93.28 
88. 30 
92.00 
97.28 
1. 
4. 
4. 
3. 
1. 
5. 
8. 
2 
3 
4.90 
4. 95 
5.40 
16. 06 
25.00 
1.41 
3.20 
1. 35 
.85 
4 
5 
6 
7 
8 
2.61 
9 
2.5 
10 
.5 
11 
2.0 
»hii 
1. Price quarry, Columbus, Franklin County. E. Orton, analyst. Twentieth Ann. Rept. U. S. Geo 
Survey, pt. 6 (continued), p. 432. 
2. Casparis quarry, Columbus, Franklin County. Chemist of Cleveland Rolling Mills, analys 
Twentieth Ann. Rept. U. S. Geol. Survey, pt. 6 (continued), p. 432. 
3,4. Lillev's quarrv, Columbus, Franklin County. N. W. Lord, analyst. Geol. Survev Ohio, vol. 
p. 763. 
5,6,7. State quarrv, Columbus, Franklin County. C. C. Howard, analyst. Geol. Survey Ol 
vol.4, p. 617. 
8. Stitt quarry, Columbus, Franklin County. C. L. Mees, analyst. Geol. Survey Ohio, vol.4, p. 93 |;| 
9,10. Owen Station, Marion County. N. W. Lord, analyst. Geol. Survey Ohio, vol. 6, p. 769. 
11. Kelley quarries, Kelleys Island.' N. W. Lord, analyst. Geol. Survey Ohio, vol. 6, p. 753. 
MAXVILLE {LOWER CARBONIFEROUS) LIMESTONES. 
The coal fields of Ohio are encircled by a belt of Lower Carbonifei 
ous (Mississippian) rocks. Included in this series is a prominent lime 
stone formation — the Maxville limestone. This limestone is usuall 
low in magnesia and fairly high in lime. It will usually range fronl 
80 to 90 per cent in lime carbonate, as shown by the analyses below. 
Anah/srs of Maxville (lower Carboniferous) limestone, Ohio. 
No. 
Silica (SiOo). 
1 
3.02 
5.91 
9.01 
11.58 
4.28 
2 
3 
4 
5 
Alumina 
(AL0 3 ); iron 
oxide 
(Fe 2 3 ). 
1.60 
2.99 
1.18 
2.68 
16.09 
1. Glenford, Perry County. 
2. Winona Furnace, Hocking County. 
3. 4, 5. Webb Summit. 
The analyses are taken from Rept. Geol. Survey Ohio, vol. 4, p. 
Lime carbo- 
nate 
(CaC0 3 ). 
Magnesiu] 
carbonati 
(MgC0 3 ) 
93.08 
l.i 
89. 31 
1.1 
88.71 
.J 
82.88 
»> ■ 
79.18 
1.! 
