308 ANALYSES OF ROCKS, U. S. GEOLOGICAL SURVEY. 
NEW MEXICO, ARIZONA. 
A. Adobe soil, Santa Fe, New Mexico. 
B. Adobe -soil, Fort Wingate, New Mexico. 
Analyses A and B by L. G. Eakins, record No. 981. 
C. Clay, Salt River Valley, Arizona. 
D. Clay, about 1 mile from C. 
Analyses C, D, by E. T. Allen, record Nos. 1945, 1959. 
[NO. 228. 
A. 
B. 
c. 
D. 
Si0 2 
m. 69 
14.16 
4.38 
1.28 
2. 49 
.67 
1.21 
| 4. 94 
26.67 
.91 
.64 
.51 
36. 40 
trace 
trace 
J- 2. 26 
50.51 
14. 63 
5.03 
3.00 
6.77 
2.18 
3.06 
Wl3. 30 
.66 
mulct. 
50. 55 
A1 2 3 - . 
14. 89 
Fe 9 3 
4.98 
MgO 
2. 91 
CaO 
4.82 
Na 2 
4.12 
K 2 
3. 19 
H,0 at 105° 
4.75 
fl 2 above 105° 
Ti0 2 
6. 00 
.58 
CO, 
. 77 
.29 
.41 
.34 
.09 
25. 84 
.75 
.82 
.07 
t race 
2 S] 
P 2 5 
so 3 
.20 
.03 
CI 
MnO 
BaO 
05 
Organic matter 
2. 00 
5.10 
99.72 
99.97 
99. 37 
99. 65 
a Loss oil ignition. 
