115

ECONOMIC CONSIDERATIONS

_ The deposits occur as veins trending east and west and except locally
dip at very high angles to the north. The veins are confined to a compara-
tively small area, over most of which rock is sufficiently well exposed to
warrant concluding that no undetected large veins are present beneath
the drift. The veins end suddenly. Most of them are too narrow to be
of value. The wider veins may be observed to contract rather suddenly
or to split into diverging veins too narrow to be of value.

Of the veins uncovered, four only are wide enough to be of value.
Some of the narrower veins may widen with depth and wide veins may
exist which do not extend to the present surface. There is a tendency
for the wider veins to hold much apatite mainly confined to zones following
one or both walls or occurring towards the middle of the vein. Number 8
vein, from which came most of the ore shipped in former years, appears to
be the largest vein exposed. It had at the surface an average width of
10 to 15 feet over a length of about 400 feet and as indicated in the tunnel
maintained its width through a vertical distance of more than 150 feet.
A considerable part of the vein consists of apatite. From the surface to
the level of the tunnel it is probable that there was once present about
65,000 tons of ore, the greater part of which still remains. There is nothing to
indicate how deep the vein will maintain a thickness of 10 to 15 feet or more.
The vein may terminate in depth as abruptly as it does at the surface.

In the case of No. 3 vein, as stated on a preceding page, the indica-
tions are such that it is estimated that there occurs at the bedrock surface
a lenticular body of magnetite 120 feet long with a maximum diameter of
25 feet, and a second body 100 feet long with an average width of 7 or 8 feet.
There is nothing to indicate how deep these bodies extend. If they continue
for 100 feet, the amount of ore present would be only about 25,000 tons.

No. 10 vein is exposed at one place only, but there has a width of 20
feet, though much of the breadth is not true ore. It seems entirely pro-
bable that this vein extends for some considerable distance beneath the
drift and that it maintains at least its surface width to a depth of 100 feet,
but even so the available tonnage of ore could scarcely exceed 75,000 tons.

The total amount of available ore that may be expected to be present
with some degree of certainty thus does not exceed 175,000 tons. If it
be assumed that the wider parts of the three veins extend to depths as
great as the lengths of these wider parts, the ore expected to be present
would amount to about 325,000 tons.

(31 b) Magnet, Moose, Signal, and Anvil Mineral Claims
(See Figures 21-23)
LOCATION AND HISTORY

The Magnet, Moose, Signal, and Anvil mineral claims are situated
about 7 miles west-southwest of Kamloops. They lie south of the road
from Kamloops to Cherry creek, the northernmost claim being about
one-half mile from a point on the highway distant 8 miles from KkKamloops.
The claims are the property of George McDonald and associates of Kam-
loops. The ore is magnetite and where best developed forms sharply
defined veins of considerable size. The property has been held for a
considerable number of years, but has not hitherto been referred to in
governmental reports or technical journals.