3LARKE.] STONY METEORITES. 233 
3. WINNEBAGO COUNTY, IOWA. 
Fell May 2, 1890. Sp. gr. 3.804, 28°.5. Analyzed by L. G. Eakins, 
record No. 1190, and described in Bull. 78, p. 95. 
Composition of the mass. 
Nickel-iron 19. 40 
Troilite 6. 19 
Soluble silicates 36. 04 
Insoluble silicates 38. 37 
100. 00 
Separate analyses: 
A. The nickel-iron. 
B. Silicate soluble in trydrochloric acid, calculated to 100 per cent. 
C. Insoluble silicate, recalculated to 100 per cent. The Cr 2 3 prob- 
ably represents chromite. 
A. 
B. 
c. 
55. 51 
5.43 
.25 
9.45 
Fe 
92. 65 
6.11 
.65 
trace 
trace 
Si0 2 
39.74 
Ni , 
• Co 
A1 2 3 
Cr 2 3 
P 
FeO 
18.42 
.38 
trace 
.69 
40.77 
trace 
trace 
trace 
S 
NiO 
MnO 
99.41 
CaO 
3.00 
24. 09 
.15 
2.12 
MgO 
K 2 
Na 2 
P 2 5 
100. 00 
100. 00 
