138 
EED, WHITE, AHD BLUE EXTENDED MINE, BENDIGO. 
By H. S. Whitelaw, Field Geologist. 
The Bed, White, and Blue Extended mine is on the Sheepshead line, 
between Casley’s Bed, White, and Blue (to the south) and the True 
Blue mines, 3 miles south of Bendigo Post Office. 
The shaft is 931 ft. deep (manager’s measurement), and there are 
nine levels between surface and 900 ft. So far as can be seen, the only 
stoping done is above No. 2 cross-cut, on quartz on a fault, in centre 
country, and on an east leg south from the plat at 38 ft. to 64 ft. from the 
shaft. Centre country has been cut at every level, and numerous backs 
have been prospected, but only one saddle reef has been exposed, viz., 
about 15 ft. above the 800-ft. cross-cut, where an 18-in. cap has been 
uncovered by a rise on the east leg, in which gold was not seen. 
Previous to the formation of the present company, the last work 
performed in the mine was at the 900-ft. level, where a winze about 
10 ft. east of centre country was sunk about 10 ft. in a width of about 
10 ft. of spurs on the west side of a dyke “lava.” These spurs and 
the country rock in which they have formed are auriferous to the value, 
the present manager estimates, of between 2 dwt. and 3 dwt. to the ton. 
Operations ceased on account of water trouble, and the mine was aban¬ 
doned about five years ago. Becently the present company reopened 
it, and commenced sinking the shaft (four compartments below 700 ft.), 
and 13 ft. 9 in. x 4 ft. over the timber. 
All the conditions observable point to the strong probability of the 
existence of a reef at the depth mentioned, 1,000 ft. The auriferous 
spurs disclosed on the 900-ft. cross-cut, and in the winze below it, have 
almost certainly been deposited in country fractured by a strong east¬ 
dipping fault, which crosses the bottom plat, and they have the appear¬ 
ance, as they were followed downward, of forming the neck of a saddle 
reef, which may be found between 30 ft. and 40 ft. below the 900-ft. 
cross-cut. At this depth it would appear, from the pitch diagram of the 
line, published some years ago, that the shaft has just entered the zone of 
country in which, on the northern pitch of the channel, the Hercules 
and Energetic and Central Blue mines are working rich shoots, and the 
Ironbark, Victoria Consols, and Little 180 are breaking payable stone. 
Further, according to the manager who worked in the True Blue mine, 
the fault exposed in the Bed, White, and Blue Extended 900-ft. cross-cut 
was profitably worked on a pitch of 12 in 100 north (the pitch of the 
country undulates throughout the Bed, White, and Blue Extended lease), 
for a length of over 1,000 ft. between depths of 450 ft. and 500 ft. in the 
former mine. 
[11.11.16.] 
DIAMOND CBEEK GOLD MINE, NILLUMBIK. 
By A. M. Howitt, Field Geologist. 
Geological. 
The geological formations seen in the Diamond Creek mine are 
banded to normal shales, sandstones, and occasional narrow beds of 
quartzite and black, slates, already determined as of Silurian age 
