249 
rich pyrites occurs. The outcrop of the reef was discovered on the east 
bank of the creek, and a small shaft was sunk 40 feet deep. In it the 
shoot of auriferous quartz was struck at 12 feet from the surface. The 
strike of the reef is N. 5 0 E. ; dip, 85° W. ; pitch of auriferous 
shoot, 25 0 S.; strike of the country rock, N. 17 0 E. ; dip, 6o° 
E. Yellow sandstone with quartz spurs occurs at the north end of the 
shoot. The reef where first struck was 3 inches thick, but it expanded 
to 3 feet lower down. The shoot was followed southward for 230 feet. 
At a depth of 45 feet from the surface a fault dipping east at a low angle 
displaced the reef 4 feet to the west, going south. Above the fault the 
quartz was worth about 10 dwt. of gold per ton, but below the value 
decreased to 5J dwt. At 172 feet south of the small shaft another shoot 
of quartz came in and yielded 6 dwt. of gold per ton. The reef was- 
12 inches thick. At 230 feet southerly from the small shaft a cross fault 
dipping south-easterly at 6o° cuts everything off. This appears to be a 
strong fault, and the reef has to be searched for on the south side of it. 
At 130 feet south of the small shaft in the level, and 60 feet below the 
surface, a winze has been sunk 48 feet, which connects with the workings 
from the main shaft. In the main shaft level, 112 feet deep and just 
under the winze from the 60-ft. intermediate level, the reef is 2 feet thick 
and poor in gold. A fault at 20 feet south from the bottom of the winze 
moved the lode 12 feet east, going south. The pitch of the shoot is about 
20 0 S. At 52 feet south of the winze a new shoot of quartz comes 
in overhead; it carries about 2 dwt. of gold per ton, and widens out to 
6 feet thick. The dip of the reef is 59 0 W.; this is probably the 
normal dip. At 121 feet south of the winze the bottom level ends and 
the fault must be within a few feet of the face, and this will again cut 
everything off. A drive along the fault in a south-westerly direction 
should be made to pick up the lode again. Twelve feet back from the 
face of the end of the bottom level, fine-grained iron pyrites occurs in the 
lode on the floor of the drive. A sample taken in my presence assayed 
at the laboratory 6 oz. 17 dwt. 20 gr. of gold per ton of ore, and 
the mineral and quartz were 12 inches thick. A winze should be sunk 
on this rich ore. The shaft at this mine should be sunk another 100 
feet, and the lode would be cut at no great distance from the shaft. From 
the appearance of the adjacent country it is likely that other auriferous 
reefs exist. High-level auriferous gravels have been worked close by r 
and the recent alluvium along Moonlight Creek has been extensively 
worked. There is no better immediate work to be done than the follow¬ 
ing up of the rich gold-bearing pyrites near the south face of the bottom 
level, and the material from this work should pay handsomely. Nine 
hundred and ten tons of quartz has been crushed for 267 oz. 2 dwt. of 
gold. 
[iJ-5-oo. 1 
MARINE AURIFEROUS DRIFTS. ILLIBAROOK. NEAR 
ROKEWOOD. 
By E. ]. Dunn , F.G.S., late Director , Geological Survev. 
Between Thornton’s Reward mine and Illibarook the country consists 
of Tertiary beds, and these have been worked at many sites for alluvial 
gold. Quite close to Thornton’s Reward mine, on Moonlight Creek, 
and about \ mile in a southerly direction on the top of the rise, an old 
lead has been worked. This may have been where a stream flowed 
