166 
On a later visit, accompanied by Mr. Cunningham. I proceeded to 
locality No. 2 (referred to in my first report); and whilst removing the 
loose surface and more decomposed rock, at a depth of about 15 inches. „ 
a well-defined cross vein of solid stibnite was exposed trending across 
the strata, with a bearing of E. 20 deg. S., and nearly vertical. It 
can now be seen that this vein consists of stibnite about 2 inches wide, 
with a casing of oxide of antimony. The crushed siliceous sandstone 
and shale formation which it cuts is here and there marked by lenticular 
patches of antimony oxide. The strike of the beds, is X. 40 deg. W., but 
the angle of dip could not be taken. I was unable to determine the 
width of the whole antimony-bearing formation, but may state it as 
approximately 2 feet. A dish prospect from this solid antimony sul¬ 
phide yielded several colours of free gold, one fairlv coarse. It is 
possible that other solid sibnite may be cut, and seeing that there has 
been nothing done here as yet, Messrs. Cunningham have a chance of 
opening up antimony ore, which might easilv have been overlooked had 
not an officer of the Mines- Department visited their claim. 
[Report sent in 2g.y. 04 .] 
FURTHER NOTES ON ANTIMONY ORE AT TYAAK. 
By Stanley Hunter. 
Mining operations are being carried out on an antimonv lode situated 
in the south-western half of allotment No. 132B, parish of Broadford, 
and about 4J miles a little north of east from Broadford township, at 
an altitude of 1,180 feet above sea-level. 
The surrounding country is undulating to steep, and the uncultivated 
portion is lightly timbered with box and gum saplings. 
The mine is comparatively easy of access, except in midwinter, when 
the heavy roads would preclude transport of machinery. 
The rocks are Silurian, and consist chiefly of mudstones and sandy 
shales, with bands of sandstone at irregular intervals. The strike varies 
from X. 28 deg. W. to X. 36 deg. W., with a- regular dip at the mine 
of 55 deg. to the west. 
The lode has been traced by shallow prospecting holes .and trenches 
for a total distance of about 60 chains, and has an average strike of 
W. 20 deg. X., with a northerly dip of from 70 deg. to 75 deg. The 
width of the lode formation from wall to wall varies from 2 feet down 
to 6 inches, and the average might be estimated at about 14 inches. 
Almost invariably that portion of the lode containing most antimony, 
either as a sulphide or oxide, is from 4 inches to 6 inches wide, and is 
on the footwa'll. I was informed bv Mr. Cunningham that at the eastern 
end of the formation, as far as it is traced, the gold value per ton in¬ 
creases, and the antimony value decreases; and that the contrary occurs 
at the western end. 
At the bottom of the shaft there are short drives, 16 feet west and 
12 feet east on the lode formation. The lode was again opened 45 feet 
south of the main shaft, and at the bottom level it crosses the shaft, the 
dip here being 75 deg., north, and the strike W. 21 deg. N. 
