eckel.] GOLD AND PYRITE OF DAHLONEGA DISTRICT, GA. 63 
completely through the vein. Two drifts diverge from the tunnel at 
right angles, both being run parallel to the trend of the vein. One 
of the drifts is run on the western or hanging wall of the vein ; the 
other on the foot wall. About 100 feet southwest of the tunnel open- 
ing an incline has been sunk on the dip of the vein, a depth of 60 
feet below the mouth level having been attained at the time of visit. 
These workings, taken in connection with somewhat extensive 
diamond-drill explorations and the examination of natural outcrops, 
would seem to give a fair basis for calculation of the size of the 
deposits. The outcrop extends for a distance of at least 2,000 feet 
along the surface of the ground. Where it has been effectively cross- 
cut by tunnels and incline, the pyrite body is shown to be about 30 
feet in thickness, and trenches and drill borings would appear to 
prove that its thickness at»no point along the 2,000 feet of exposure 
falls below 20 feet. It has been followed down on the dip for a dis- 
tance of almost 150 feet. 
The body of ore seems, therefore, amply large enough for profitable 
exploitation. The operating company has adopted a wise policy in 
this respect, the intentions being to push underground working and 
accumulate a large supply of stock ore before commencing to build a 
treatment plant. 
The ore highest in sulphur occurs in the middle 20 feet of the vein, 
the ores along each wall running lower in sulphur and higher in cop- 
per than the average. Eight carloads of ore were taken from the 
tunnel, thus securing a sample entirely across the vein. The average 
of the analyses is as follows: 
Analysis (average) of Chestatee pyrite. 
Per cent. 
Sulphur 43.52 
Iron '. 39.70 
Copper 3.09 
Zinc '. .72 
Alumina 2. 53 
Magnesia . .43 
Arsenic ■_ None. 
Silica, etc 9.26 
Moisture .36 
| Analyses from the middle 20 feet would show a higher sulphur and 
lower copper content than the average analysis quoted, while analyses 
of the portions of the pyrite body near the walls would give lower 
t sulphur and higher copper. It is probable that this difference in 
a (Composition, which can be noticed even in a hand specimen, will be 
)ti taken advantage of in planning the treatment of the ores. 
In conclusion it is necessaiy for the writer to acknowledge the aid 
received from Mr. N. P. Pratt in this investigation, as the results 
obtainable would have been very slight if Mr. Pratt's assistance had 
been less freely and courteously given. 
