380 M. W. Lles—Smaltite in Colorado. 
Art. XLII.—On the Occurrence of Smaltite in Colorado; by 
MALVERN W. ILES. 
A vein of cobalt-bearing minerals, containing smaltite in 
predominant quantities, has recently been discovered nea 
come Gunnison County, Colorado. 
The vein ma see contains much crystallized calcite, in which 
are irregularly distributed smaltite and erythrite. There is 
minerals. 
A sample of smaltite obtained from the surface croppings 
yielded the following results: 
COO oe ee 11°59 
WO ba See ee ees 11°99 
Ba se oe Se ee ee 63°82 
Sgt a ROD Be CIC > Ia 2°60 
Pi ee ee 2°05 
De ae eee eee ee 1°55 
Bio ee 1°13 
Ce seo oe ee orl 
ING 2 trace 
Ag aac ee 44 
98°89 
ee Lhe sample yielded 15 per cent. cobalt. 
e Gem, and other mines, near Silver Cliff, meetin 
ana a number of nickeliferous minerals, and a sma 
ma tae of cobalt. 
riter has recently detected a small amount of nickel 
and a af Veh of cobalt in an iron pyrites near Granite, Colorado ; 
i iki mblance e 
ihe iron pyrites found at Anthony’s Nose on the Hudson 
fe Grant Smelting Co., Leadville, Colorado. 
