202 B. Silliman— Mineralogical Notes. 
Domeyko’s chileite, but it is not a clay-like mineral. It yields 
readily a globule of lead containing a nucleus of copper. No 
arsenic was found. It occurs also in the ‘‘ Chromate” vein. 
Gold in coarse crystalline grains occurs in the quartz of the 
“Collateral” vein. 
The Phoenix Mine, one mile east of the mine last named, 
furnishes specimens similar to those just described. van 
adinite is light yellow and deep orange-yellow to reddish, in 
large, well-formed crystals, which react for chlorine but not for 
arsenic. The gangue is quartz which carries gold but no cal- 
Among the specimens sent to me by Mr. Farley on the 25th 
of June, which I have just examined, I find crystals of van- 
adinite in the gangue of both the “Collateral” and the * Chro- 
mate” veins, quite unlike those before described and very 
closely resembling in habit, color and form, the brilliant red 
well defined hexagonal prisms. It appears to be an abundant 
source for the supply of vanadium. 
At “the Frenchman’s Mine,” a gold-bearing vein, of about 18 
Calcite occurs in the gangue. ° : 
There are other localities in this district in which vanadium 
is found, but the foregoing will suffice. : 
Mimetite occurs in considerable masses north of the Doming® 
mine on Castle Creek in the extreme northwest of the Vulture 
District, as here described. I have seen only a single mass © 
about 80 grams found by Mr. Farley. It was without gangue 
or associated species, and quite amorphous. 
From “ Bethesda Mine,” in Los Cerillos, New Mexico, I col: 
lected in April, 1880, specimens showing greenish crusts of 
vanadinite in botryoidal forms and sometimes nearly 
It is there associated with wulfenite and cerussite. 
is the southerly extension of the “Mina del Tiro,” worked by 
