238 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
According to Merrill, the silicates visible are olivine, enstatite, probably a little 
plagioclase, and some glassy base. 
Analyses by W. F. Hillebrand, record No. 1444. 
A. Nickel-iron. 
B. Nonmagnetic, stony portion. 
GC. Portion of B soluble in hydrochloric acid, calculated to 100 per cent. 
D. Insoluble portion, calculated to 100 per cent. From C and D troilite and 
chromite are excluded. The chromite forms about 0.75 per cent of the stony matter. 
! 
A. B. Cc. D. 
100. 00 
| i 
12. LLANO DEL INCA, CHILE. 
Analyzed by L. G. Eakins, record No. 1201, and described in Bull. 78, p. 97. 
Approximate composition of the mass. 
Nickel Aron: veanenecoodrnnkeieven's ve eked pera eeneys sone eeAeEWS 25.8 
Troilite),.s.sce2es2 esd ceseeweeias ssn s be eewaeee owe e Pe cenased 10. 6 
Holubleisiieater., © siccwiecates 2 2S eded Bae aGatieen se nee Gaels 30.9 
Insoluble silieates:. 2 sceceleeaoe de ce aan datvbavecanecui ne ¥ee bee a pane as 32.6 
99.9 
Separate analyses. 
A. The nickel-iron. 
B. Silicates soluble in hydrochloric acid, calculated to 100 per cent. 
C. Insoluble silicates, calculated to 100 per cent. 
Is the P.O, in B derived from schreibersite? 
hm 4 B. Cc 
WO sien wcmeets i4 aise 2 Satecet ited oe ee 89.77 
99. 55 
