226 
CEMENT MATEEIALS AND INDUSTRY. 
Analyses of Pennsylvanian si tales, Missouri. 
[HILL. L'43. 
Number. 
1 
60.70 
2 
59.96 
3 
54. 57 
4 
56. 86 
5 
63. 11 
6 
60. 12 
7 
54.69 
8 
53. 24 
9 
58.50 
10 
54. 03 
11 
55. 96 
Silica 
(Si0 2 ). 
Alumina 
(A1»0 3 ). 
18.20 
15. 76 
23.61 
17.97 
23. 11 
21. 35 
25.96 
23.62 
30. 50 
22. 50 
20.63 
Iron 
oxide 
(FeoOs). 
7.58 
7.72 
7.88 
9.35 
1.79 
7.06 
4.97 
9.02 
2.34 
7. 90 
8.12 
Lime 
(CaO). 
2.68 
. 60 
.52 
1.67 
.42 
.82 
.18 
1.17 
1. 20 
.85 
1.91 
Magnesia 
(MgO). 
Trace. 
0. 93 
1.48 
1.12 
.70 
1.08 
.15 
1.41 
.51 
2.70 
1.96 
Alkalies 
( KoO, 
Na.;0). 
3. 67 
3.66 
3.55 
2.61 
3.71 
3. 43 
3.58 
4.38 
.30 
4.12 
3.34 
Combined 
water. 
6.77 
7.70 
6.67 
6.96 
7.05 
6.32 
8.90 
6.94 
6.74 
7. 54 
MoisturJ 
n.d. 
4.00 
1.03 
2.45 
4(1 
1. Prospect Hill, St. Louis County. R. Chauvenet, analyst. Missouri Geol. Survey, vol. 11, 
2,3. Laclede lire-clay mine, Cheltenham, St. Louis County. Ibid., p. 421. 
4. Huntsville, Randolph County. Ibid., p. 411. 
5. Billings, Christian County. Ibid., p. 375. 
6. Deepwater, Henry County. Ibid., p. 387. 
7. Clinton, Henry County. Ibid., p. 382. 
8. Boonville, Cooper County. Ibid., p. 377. 
9. Lakenan, Shelby County. Ibid., p. 421. 
10. Lexington, Lafayette County. Ibid., p. 395. 
11. Foster, Bates County. Ibid., p. 369. 
LOESS AND SURFACE CLAYS. 
P. 41 
Along the banks of Mississippi and Missouri rivers thick deposit 
of loess clays occur in the river bluffs. These are tine-grained clays 
carrying a considerable percentage of very fine sand, and will b 
valuable for use at cement plants located near these rivers. Snmlle 
local deposits of surface clays also occur all over the State. The tab 
below contains analyses of representative clays of both types: 
Analyses of loess and surf ace clays, Missouri. 
1 
li 
- 
1 
2 
3 
4 
5 
6 
7 
s 
Silica (Si0 2 ) 
Alumina ( A1 2 3 ), 
Iron oxide (Fe 2 3 ) 
73.92 
11.65 
4.74 
1.43 
.60 
3. 13 
3.08 
73. 80 
13. 19 
3.43 
.86 
.68 
2.94 
5. 26 
72.00 
11.97 
3.51 
1.80 
1. 35 
3. 25 
6.42 
71.11 
11.62 
3.90 
2.37 
1.47 
3. 14 
6.71 
74.39 
12. 03 
4.06 
1.50 
1.53 
3.01 
3.17 
61.19 
15.48 
5.49 
1.95 
1.56 
2.82 
9. 02 
3. 11 
62. 80 
17.22 
5.21 
.98 
.78 
3. 63 
7.82 
2.06 
J 
1S.C 
6.( 
2. i 
1.] 
3.i 
6.1 
6.' 
i 
Lime (CaO) 
Magnesia (MgO) 
Alkalies (K 2 0, Na 2 0) 
Combined water 
it 
Moisture 
t 
hi 
1. Loess clay, St. Louis, St. Louis ( 
2. Loess clay, Hannibal, Marion ( 
3. Loess clay, Kansas City, Jackso 
4. Loess clay, Boonville, Cooper C 
5. Loess clay, Jefferson City, Cole 
6. Gumbo clav, Elm Point, St. Chi 
7. Gumbo clay, Clifton, Randolph 
8. Gumbo clay, Norborne, Carroll 
bounty, 
ounty. 
n Count 
mnty. 
County, 
irles Coi 
County 
County. 
Missou 
[bid. 
y. Ibid 
Ibid. 
Ibid, 
intv. 11 
[bid., 
Ibid., 
■i Geol. 
)id., p. 5 
p. 547. 
p. 546. 
Survey, 
48. 
vol. '1, p 
486. 
II 
.1 
