122 S. B. Newberry—Nickel Ore from Nevada. 
ArT. XVII.—On some Specimens of wa ae from Nevada ; 
by Spencer B. NEw 
WITHIN the past year have appeared frequent references to 
the occurrence of nickel ores in Churchill Co., Nevada, all seem- 
ing to indicate that a very valuable source of supply of nickel 
has come to light. Through the kindness of Chas. Bell, Esq., of 
Sacramento, one of the discoverers of the deposit, I was able to 
obtain a complete series of specimens from the different levels 
so far opened, namely, the 10 ft., 45 ft., and 60 ft. level, and the 
80 ft. drift. The specimens amount in all to about 30 pounds 
in weight, and are by far the finest masses of nickel ore I have 
ever seen 
The sample from the greatest oS (80 ft.), consists of nearly 
pure niccolite, which in the 60 ft. 45 ft. specimens show the 
progress of oxidation and ydvadion: this action appearing more 
complete as the surface is approached. The specimen from the 
10 ft. level (nearly eight pounds in weight), consists entirely of 
the hydrated arseniate, or annabergite, with but a small amount 
of impurity. The analysis of a sample of the entire mass gave: 
ES epee peo 33°71 per cent. 
RAD sein 36°44 “ 
MBG Ce eas were, 
The remaining five per cent represents small eon cag of iron, 
pa der and insoluble residue, with traces of coba 
in veins, of which there are thirteen in all, eac fa ten to 
thirty-five inches wide. The gangue which separates these veins 
of ore is in layers from four to eight inches wide, and consists 
of silica, iron, lime and magnesia. The same character of min- 
erals extends ‘throughout the whole length of the lead.” 
n view of the extraordinary purity and richness of the ore, 
there can be little doubt that if future developments should 
bear out the present indications outlined in Mr. hs = des a 
tion, the mines of Nevada will eventually bec 
prominent source of the world’s supply of this deabie metal 
Laboratory of Cornell University, June 30, 1884, 
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