134 
auriferous belt, parallel to and about 2 miles west of tbe Ajax line, 
which, from stratigraphically lower levels, has produced large quantities 
of gold. This end of the belt has long been regarded as a promising 
field for mining enterprise, and there is now some hope of its being 
properly opened up. To the east of the Lord Koberts’ leases there are 
numerous parallel deposits of quartz, some of them, notably Adam’s reef, 
70 chains to the east, 200 tons from which yielded 2,400 oz., or an average 
of 1 lb. of gold to the ton of quartz—have in places been worked with 
good results to water level. Below that depth, with the exception of 
Adam’s reef, on which a 6 ft. x 4 ft. shaft was sunk to a depth of 
400 ft., the reefs have not been followed. They continue below water 
level, and they can be traced for long distances along the surface, and 
generally, from their persistency and regularity, afford scope for 
systematic and continuous mining. 
[15.11.13.] 
0’C0^7I70K’S MlhTE, DRUMMOI^D ISTORTH. 
1 
By W. Baragwanath, Senior Field Geologist. 
The present shaft of the O’Connor’s mine is located to the west 
of and on a parallel line to the former main workings of the O’Connor’s 
United mine. The line of reef was located in a tunnel driven in an 
easterly direction from Back Creek. In this tunnel a shoot of gold- 
bearing stone was followed down by a winze, and the main shaft was 
then sunk and a level opened out at 200 ft. in order to further test the 
reef. (Big. 47.) At this level two distinct shoots of gold-bearing stone 
have been opened up, and a rise on the southern one proved that shoot to 
be distinct from the closely adjacent formation worked in the tunnel and 
winze. The north shoot was stoped over the 200-ft. level up to near 
the level of the tunnel. The shaft was deepened to 240 ft., and at 
170 ft. from the shaft the line of the northern shoot was located and 
driven on. Stoping is now in progress between this level and the 
200-ft. level, and a winze is being sunk below the main drive on a 
formation from 18 in. to 30 in. wide, showing fair gold. The lode 
formation consists of a well-defined fault or fissure dipping east at 
from 45° to 60°, and intersecting strata which dip from 60° 
to 80° west. The strike of the reef is from 'N. 15° W. to N”. 20° W., 
while the strike of the strata is from Bf. 10° E. to BT. 15° E. 
The intersection of reef and strata pitches north at about 
1 in 4. The reef varies in width from a few inches, with 
several inches of crushed material, to 12 in. and 18 in. of solid, 
laminated, highly-mineralized quartz. The shoot of gold does not 
appear to be limited to one particular intersection, but more to a 
