234 
ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
Composition of the mass. 
INIGKGTPONsaccacdeseten 12a naire sees e4 oe oataame oe neeelemes ee 19. 40 
PROM Teas ceed ead oa ec ee ee eee ta oe eetal haem ae Re 6.19 
Soluble silicates........-.----.-22--------- Sone eee oases 36. 04 
Insoluble silieatesin. sc -opdsenecies sauet ys cos awautddetiog casi: e's 38. 37 
100. 00 
Separate analyses: 
A. The nickel iron 
B. Silicate soluble in hydrochloric acid, calculated to 100 per cent. 
C. Insoluble silicate, recalculated to 100 per cent. 
chromite. 
The Cr,0; probably represents 
99. 41 100. 00 
5. TANEY COUNTY, MISSOURI. 
Analysis by J. E. Whitfield, record No. 736. See Bull. 60, p. 106. Sp. gr., 4.484. 
A. The separated nickel-iron. 
B. The stony portion as a whole. 
C. Silicates soluble in hydrochloric acid, recalculated to 100 per cent. 
D. Insoluble silicates, recalculated to 100 per cent. 
A | B. | iG | Ds 
Reg sais eee eee ao. at | 
Nig esate ubsce nngeecgcnes 10. 41 
OO side Darsce Hanae vie SoRuReMaRECaes -29 || F 
Bir ncovecassthcs cra taupe ene e? 16 
100.27 | 
6. WASHINGTON COUNTY, KANSAS. 
Fell July 25, 1890. Analyzed by L. G. Eakins, record No. 1227, and described in 
Bull. 90, p. 45. Sp. gr., 3.49, 21.6° 
Composition of the mass. 
Nickel rote sesacacess esecaca Some ties een Andee eee aes 7.7 
GIS ROM EA GON Sees bY cFeyeet apse ARE MEg sac 27 chad ance nd og Mabel dspeaeAadedel etsne otersta eye 5.0 
Solublewsilica tess. oes Jods ee ves pox Menes See eee ees Gees 46.0 
Insoluble pilicategvccccc.sahcex bo6 bs cameeeeedeuc eee sss Pes eaea. 41.5 
