about
200 feet have yet to be driven to reach the downward continuation of
the golden part of the lode. Several lode tracks, and at least one
dyke, were passed through in the tunnel, and these lode tracks are
worth prospecting. The strata strike as much as 70° to the east of
south here, and their lines of slate drainage show a contact with the
lodes different from the rule in this field. The whole of the rock
layers of the area have been much disturbed, admitting of great
concentration of the golden contents of the slate drainage, and I am
inclined to think that the present works will enter the region of the "
keel" of the favoured situation whose downward continuation is being
looked for. It is said that the late Hon. John Wallace had many
thousands sterling in profit from the golden quartz in the Shamrock and
Land
Tax lodes at shallower levels, and that is. the reason why attention is
being devoted to the lower levels. There is much of the graphitic and
pyritic material in the formation, which appears to be the northern
continuation of the system on which to the south are situated the
Johnston, Mons Meg, and United Miners mines.
North-west
from the Shamrock, and apparently on the same system of lodes, is the
Buckeye mine, where the usual association of lodes and strata is to be
seen. The line of contact of slate drainage with the lode line has
resulted in forming a position of deposit slightly different in detail
arrangements to those of other parts of this field. Much twist strain
has been applied locally, and the lode structure is as sketched in Fig.
12. An eastern line of drainage branching from the lode is connected
with the latter by almost horizontal cracks due to the twist strain,
and at the junction great facilities have been presented for the
deposition of the gold. In fact, the whole position, including that of
the golden situation in the lode itself, together with the situation in
the horizontal cracking, d that
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