18 REPORT OF THE MINISTER OF MINES, 1929.
ae eS SSS Se

The ore-deposits in this section appear to be all of the same character—namely, massive
deposits of magnetite which have the appearance of vein-dykes, but are probably replacements
of limestone-beds. The deposit on the Moresby Island claim is rather different, there being
hardly any magnetite, and chalcopyrite is more evenly disseminated through the mass.

Harriet Harbour.

This property, consisting of several groups and claims in the vicinity of
McMillin. Harriet harbour, is owned by J. S. McMillin, of Seattle, Wash. The properties
include the Reco, Modock, Sandwich Fraction, Copper Queen, Magnet, Moresby
Island, and Eagle Tree. The showings on the Reco are reached by a trail from the head of
Harriet harbour at about a quarter of a mile from the shore and an altitude of 200 feet. Here
there is a deposit of magnetite, probably a replacement of limestone impregnated with pyrite,
pyrrhotite, and chalcopyrite, having an average of from 1 to 2 per cent. copper; the dip is 30°
to the north and striking east and west (mag.). An incline shaft has been sunk on the dip of
the deposit, but the bottom was full of water. A little surface work has been done, but not
enough to determine the width of the vein, but it would be at least 8 or 10 feet.
The Modock adjoins the Reco to the north. On the mountain-side a stream cuts through
some dark igneous rocks which include a mineralized area 50 feet long by 12 feet wide. The

magnetite carries about 2 per cent. copper as chalcopyrite, but not enough work has been done

to form any estimate of the quantity of the ore.

Following the trail up the mountain, the Sandwich Fraction is crossed, on which no work

has been done. The Copper Queen claim adjoins the Sandwich Fraction farther up the hill.

The old camp is half a mile back from the beach and is 800 feet above it. Seventy-five feet
above the camp there is a well-defined deposit of magnetite dipping 30° to the north and striking
east and west. A drift has been run on the strike of the deposit westerly a distance of 30 feet,
showing the same character of ore all the way to the face. The foot-wall is well defined, but
no crosscut has been run to the hanging-wall and the average width would be about 12 feet.
The deposit has been cut by a small creek and a rock-slide and shows again on the east side of
the creek. The wall-rock is granodiorite. From the look of the dump I would say it would run
5 to 10 per cent. copper. There are a number of fair-sized pieces of solid chalcopyrite on the
dump, but it would require a detailed examination to say how much of this class of ore there
was in the average run. At 150 feet below this showing a crosscut tunnel has been run in 375
feet, but did not strike the ore.

The centre of the Magnet claim is some 1,500 feet west of the Copper Queen, on what is
known as Magnet mountain, altitude 1,400 feet. There are a number of shallow trenches and
surface-stripping disclosing a body of magnetite 300 to 400 feet long by 70 to 100 feet wide, into
which a short tunnel has been driven. At one point underneath the magnetite, chalcopyrite is
seen, and this might prove to be more extensive under further development.

The Moresby Island claim lies some 1,500 feet east of the Copper Queen and a little lower
in altitude. Here there is a surface ore-showing of considerable size which is probably a contact
with or replacement of limestone. So far the work done has been entirely on the surface, con-
sisting of open-cuts and pop-shot holes, but the ground lends itself to this work as there is very
little overburden. The work shows an impregnation of garnetite rock with copper pyrites fairly
evenly disseminated,all through; though some places go better than others, an average would
be from 1 to 2.5 per cent. copper. So far the surface work shows the mineralization to have a
width of 250 feet by 300 feet long, but it may be both wider and longer than this when further
work has been done. Twenty feet down the hillside a short open-cut discloses the same mineral-
ization as seen above, proving that the ore-body extends to that depth, at least on the surface.
No further work to prove depth has been done.

The Eagle Tree property lies to the south-east of the Moresby Island claim and at an altitude
of a little over 1,000 feet, where there is a well-defined deposit of magnetite which has been
stripped for 400 feet by open-cuts and has a width of from 2 to 12 feet. The magnetic jron
carries an average of about 4 per cent. copper as chalcopyrite, but in places it runs double this
amount. A crosscut tunnel lower down the hill has been run in 200 feet, but it is estimated that
it has still 85 feet to go before striking the vein.

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