The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1918-04-04

mining results have been obtained DUR
ing the past four or five years.
Besides the early Paleozoic series OF
trict ores occur. Lemhi county carries
extensive areas of precambrian form
atoms and eruptive GRANTEES that have
proven such noted ore carriers in the
Occur d'Alene district.
Disseminated Copper Prospects.
Extending southeast from the DEM
onstrated zinc ore deposits on Carmen
creek, previously described. along the
foot Of the main range Of the Rocky
mountains for 20 miles, between the
tertiary valley sediments and the pre-
cambrian rocks of the main mountain
uplifts, there exists succession of
copper bearing ore prospects with
good associated silver-gold values in
zonal widths Of several hundred feet.
There surface manifestations of min
eral are largely confined to cleavage
fracture and shrinkage planes, but at
one or two points warrant serious
study from the standpoint of possible
disseminated ore occurrences that
might Justify churn drill tests.
Harmony Mine.
Similar interesting manifestations Of
copper mineral occur along the high
range that borders to the southwest
side Of the Lemhi Valley from Hay
den creek to and beyond the Salmon
river canyon, and an interesting sue
cession Of copper prospects with spots
of high grade mineral, including chal-
cocite manifestations are exhibited.
At central point on this zone near
the head Of Worthington creek the
Harmony mines company took over an
interesting group of claims, locally
known as the Anderson group, which
was theoretically developed during the
year and made production during
the last four months of the year Of
shipping results Of from to IL per
cent copper, with little gold and
silver per ton.
The property carries a series of
steep pitching assure veins and in it's
upper tunnel development exhibits
some very handsome chalcopyrite ore.
The property was equipped with an
air compressor plant of $40 cubic feet
capacity and an aerial tramway mile
long, and was shipping two carloads
of ore week at the close of the year.
The ore being shipped at present is all
from the 100-foot level but a new
crosscut tunnel now being driven and
in $50 feet will develop an ad-
depth of 400 feet on the series
Of assures that traverse the large
group of claims owned by this COM
pany, on which six distinct veins are
recognized, and with their favorable
geologic environments give excellent
promise at this time of proving an i'm
portant source of copper ore value.
In the strike of the same vein system
to the west. on the Salmon river
slope, the Pope Sheanon mine Is a
promising property, carrying similar
ore, and made shipment of hand
sorted mineral during the year.
BIaekbrd District.
The Blackbird copper district, 80
miles west of Salmon City, attracted
considerable attention 20 years ago,
at which time some important prelim-
mary development work was done on
an interesting and extensive series of
assures and zones Of disseminated
copper sulphide ore in black mica
schist and eruptive granite formations.
One of the principal points of devel-
opment in this district was on the
Brown Bear zone, and consisted Of
vertical shaft 800 feet deep and three
crosscuts through the zone. was in
formed, at the time of this operation,
by the manager In charge, that this
deposit exhibited an average value
across $50 feet, of 2h per cent copper,
$3.50 gold and silver with per cent
cobalt and 10 pounds of nickel per
ton.
This interesting combination Of met
allie sulphides would seem to warrant
a big concentrating operation under
present day methods. 1t proved too
low grade to be available at, the time
the development was made, by reason
Of the isolation Of the district from
railway transportation and with two
high mountain submits intervening
The Blackbird district, however, car
ries several similar occurrences of
disseminated copper sulphide mineral
and by virtue of its combined nickel
is worthy Of serious study
by consumers Of this important war
metal at the present time.
Since this development was made a
branch has been extended
from Armstead. Montana, to Salmon
City, distance of 100 miles, and
there is available from Salmon City
to the Blackbird district water grade
route, by way of the Salmon and Big
creek canyons, to these properties that
offers no serious engineering obstacles
10 railway construction. A more
thorough development of the several
&c ~ ~