The Coeur d'Alene press. (Coeur d'Alene, Idaho) 1892-1907, 1905-02-11
EODTENAI COUNTY MINES
Extract from the Report Of the state Min
ing InsPeet0r- Mines thas are Being
DevsIopsd-Great Properties Of the
Pend d'OnsiIie Region.

The chief industry of KoOtenai
county at present is based on its
magnificent forests Of timber which
are producing choice lumber products
at the rate Of 40, 900, 900 feet
yeaI, ali OF which is manufactured
within the county and shipped to
outside markets at good profit.
The mineral resources Of this
county, however, are extensive and
varied. They have been developed
sufficiently to demonstrate their size
and staying qualities to very con-
siderable depth at several points, and
include gold, silver, lead and copper
deposits of large size and good values,
and think are destined to cut q very
important figure In the total metal
output Of Idaho at no distant date.
The Occur d'AIene lead- bearing
series Of altered sedimentAry forma-
tions show a wide development In
this county and contain many fine
veins that In some instances are be-
ing extensively developed with
gratifying results.
Among the best developed and
most promising properties of this
section are the following: The
Minerva Mining company's property,
situated near Granite Greek, on the
east side Of Lake Pend d'Oreille, is
opened on q we'll defined hsure vein
in quartzite that varies in thickness
from one to eight feet in clean cut
walls, carrying a free-talc gouge, a
condition that may be relied upon to
carry its ores to great depth, and
the vein lie plainly traceable by
surface workings through the prop
erty for nearly 1900 feet in the
direction Of the strike.
This property has several hundred
feet Of edit tunnels or drifts run on
the vein, to which economical
method Of development and drainage
the steep pitching vein coursing
down the steep mountain slope
especially lends itself. The ore is a
concentrating variety of lead-zinc
sulphides, with some high. grade gray
copper, and makes a fine product
that runs we'll in all the metals
mentioned; several good ore shoots
have been opened up and various
practical tests Of the mineral have
been made with results showing as
high at s29l per ton in combined
values.
On the opposite side Of the lake
the Blacktail district has some very
/ fiattering ore showings. and extensive
plans OF development under way.
The b. r. & B. company, of this
district, own an extensive group of
claims that are well developed, and
expose clean cut flssure carrying
high grade silver bearing gray cop
per ore.
This tunnel is a splendid piece Of
work. II is a cross-cut drain tunnel
driven through the country rock Of
blue slate l,s4o feet, and taps the
vein at a vertical depth Of 400 feet
and 726 feet on the dip, where it was
found in the same clean cut, normal
condition as near the surface. and
containing thirty inches Of high grade
ore. A raise has been put through
which connects with an upper tunnel
and with the surface, and a number
of intermediate levels are being
started for the purpose of blocking
out the ore preparatory to Stopping,
and the mine should soon be In shape
to make an important production.
The ore Of this vein is high grade
gray copper in a siliceous gangue and
requires sorting, but we'll defined pay
stroaks OF very clean mineral are
encountered three 70 ten inches in
width, that average 500 ounces silver
per ton. The vein shows remarkable
strength In the direction OF its strike,
and has bean followed for fully s. 600
feet through the property and found
TO contain the same hlgh-grade silver
mineral at almost every opening. A
oommodious camp equipment &C.
companies this quite extensive de-
velopment, which represents a total |
outlay TO date Of s125, 600. The |
property lie owned by a close corpora.
tion of eastern capitalists. Several /
shipments Of ore have been made that
returned results ranging from 400 to /
1000 ounces silver per ton. A force
of twenty men Is employed, under
the management Of James A. Brown,
and the present condition Of the mine
warrants the anticipation of dividend
results Ia the near future.
The B. +. a II. mine OF this dis.
Arl..A a a A. 49, -. -. A.. -. |