The Salt Lake tribune. [volume] (Salt Lake City, Utah) 1890-current, 1911-03-26
PORCUP|NE IS A
GREAT DISTRICT
World Is Coming to Take Far
Northern Camp Very
Seriously.
RAILROAD is GOING
INTO THE DISTRICT
Geology Is Explained in a Re-
cent Mining Journal
Article.

The world has become alive 10 the fact
that in the PorcupEne district OF Canada
is one of the coming great gold camps OF
history. So seriously is the district be-
Ing taken that some of the strongest
men of capital in the United States and
Canada are purchasing and developing
properties, while the provincial govern
ment Is spending about 100000 on the
construction OF railroad TO the scene OF
action.
AS has been the case in all the north
ern gold camps, Porcupine is by no means
Gated about 600 miles north of Toronto
In the heart OF a northern forest, the
roads into which are such that nothing
Food and supplies OF all kinds re held at
enormous prices. while the prospector
taking IN his own outfit must spend a
What has been a poor mans discovery.
therefore, will be a rich mans profit. 1t
is not likely that the camp will produce
any metal until the railroad reaches II.
a writer In the Canadian Mining Jour
nal treats OF the geology OF Porcupine
In part follows:
Geology Explained.
THE rock outcrops In Tisdale town
ship rise but little above the clay fats.
They evidently represent the higher
knobs OF a pre-Cambrian area, which
was almost completely covered by silt
and fine sand deposited from a large gla
cial lake. Near Porcuplne the outcrops
are small and isolated. but farther west
and south they are more continuous All
are. low and afford no very favorable
mill sites, so that pulp Will have TO be
handled.
Many of the rocks are more or less
schistose altered volcanlcs of varied com
positions. They range In color from light
gray 10 dark green. while some varie-
lies are yellowsh. Intimately associated
with the volcanlcs are gray and yellow
ish schistose carbonates. The series is
In many respects similar TO rocks at
Iemagami and Larder lake, and is prob
ably of Keewatin age.
There are also rocks which show dis
tnct sedimentary bands OF gray wacke
gray .quartzite and altered shaes. These
are in some instances steeply inclined
without being markedly schistose, but in
most instances show secondary cleav-
age in the sediments. and the shay mem
Der is usually represented by very fs-
are probably Huronian. and resemble
those Of Sudbury and parts OF Michi-
gan more more closely than they do those Of
"a third distinct type OF outcrop is
a somewhat schistose conglomerate
composed OF light colored pebbles Of
several types, set in fine grained gray
colored matrix. The conglomerate ap-
pears TO overlie the schist series and
underlie the graywacke, and probably
roman.
Veins Long and Wide.
The Huronian and Keewatin series
alike arc impregnated with secondary
quartz In the distinctly bedded rocks
there are seams Of white and gray quartz
conforming to the stratification. and
there are also veins which strike OBJ
liquely across the bedding. In the schists
there are veins which strike across the
structure some Of the ''u gold ii"asrHSs -bearing
quartz masses show very decided dlrec-
tion. and by stripping al intervals veins
two feet to ten feet wide have been
traced for several hundred feet Others
are extremely irregular in shape, and
their extent Is known only so far they
have been completely stripped. There is
in most cases a marked associa ton OF
the gold bearing quartz with schstose
carbonate wall rock, and the quartz has
TO some extent replaced the carbonate
Where Results Gained.
''The, most extensive testing in the
camp is being carried on at the Dome
both Of which should be important pro-
ducers next year.
''At the Dome there is large oval
shaped mass of white quartz with in
The whole mass, measuring 100 by $50
PAGES. is being Systematically sampled
II is stated that forty-stamp mill Will
be installed this winter, and the opera
tors expect to have. before the mil is
ready. an estimate OF the values cof-
;ained In 100000 tons Of quartz and
pyritic schist.
The Timmins property shows quite
well defined veins. and is therefore not
being tested in the same way as The
Dome The veins have been well ex-
Shafts We're sunk and ni'''us the deposits g9osiss
proved TO be steeply inclined
There are In Tisdale township num-
ber Of large veins. showing free gold
stances heen obtained from very un-
likely looking bull quartz. II will he
remarkable If some OF these do not
prove producers"