The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1914-05-07

beds ana therefore approach the upper
Reyett rocks in character The rail-
way section between Saltese and De-
Borgia and still farther east exposes so
great a thickness of these duh greenish
impure quantities as To give the inn
preston that any distinction here be-
tween the ST. Regis and the ReVett
would probably be impossible To the
north of the old valley. however, the
Revett quartzite and the Burke forma-
ton are extensively exposed, each with
IA lithologic character that is typical
and fairly distinct from that of the
St Regis The thickness of the st. Re,
gis near the northeast corner of the
area described is about 1000 feet. Its
thickness farther south is apparently
greater, but is difficult to measure oW
ing to the Indebtedness of the lower
limit.
United Copper Mine.
The United Copper property is in
Deadman gulch, the entrance to tn,
main adit, known as the National tun
mel, being near and between the main
forks. The examination of this mlnt
consisted Of single hasty visit III
which only the lowest level was exam
ined. Mr. George Huston has oblins
ly supplied considerable information
regarding progress since this visit ana
has sent good specimens OF represen-
however,
must still be inadequate to the pros
pective Importance Of the property.
The National tunnel is about 1890
feet long and it's direction is little
east of north. At the time of visit the
only other work on this level consisted
of a short drift to the east, a few hun
bred feet from the face of the main
tunnel Since that time considerable
more work has been done, develop
ment having been stimulated by
strike of what promises to be CONNER
cial ore.
The prevailing dip of the country
rock is southwestward, and in going
northward into the tunnel one encoun-
tiers successfully the Newland, st,
Regis and Revett formations. These
are broken by numerous assures, along
some of which considerable faulting
has taken place. A short distance
south of the drift the tunnel is crossed
by a zone of brecciation marking, in
the opinion of Mr.. Huston, a fault be-
nd
atoms, with downthrow on the south
and strike approXimating east and
west.
The drift at the time of visit was
which there was some quartz contain
ing small amounts of chalcopyrite and
chalcocite. These minerals were also
disseminated in the country rock, but
in a manner somewhat differing from
that characteristic of the Snowstorm
ledge; the particles were compare
lively large but rather sporadic IN
distribution and not abundant enough
to constitute commercial ore. Shortly
after this time a vein Of chalcopyrte
several inches thick was encountered
and somewhat later the drift penetrat-
ed the ore on whose development the
future of the property is likely to de-
pend. The ore is essentially similar to
that of the Snowstorm mine and con-
sists of stratum of quartzite speckled
with minute particles Of chalcOpyrite
,1,,b hp c @
than that of the best SnoWstorm ore
and probably does not run more than
3 per cent of copper, together with !"
ounces of silver and a negligible guam
tity of gold. The proportion of chal-
copyrite is larger than in the Snow
storm mine, where enrichment has APP
parently been more extensive. The
United Copper ore shows clear evil
by chalcocite, as was pointed out by
Mr.. Huston. The ore body is about
so feet thick and has been shown to
be at least $50 feet long. AS its strike
is northwest and it's dip south. it must
toward the east with the
fault mentioned above. AS the dip OF
Ibis fault is southwark, however, the
ore can probably be followed down :
ward to considerable depth.
Copper King Mine.
The Copper King property is on the
west fork of Deadman gulch, north
west of the United Copper. The prin-
cipal development is on the lowest
level which alone was hastily exam
ned. The main tunnel is about 5000
feet long and drifts and other cross
cuts aggregate several thousand feet in
addition.
| As in the National tunnel, the pre-
vailing dip is southwestWard, although
! there has been some folding and fault
| ing. The rocks in the outer part of
! he tunnel belong to the Ncwland for
nation, which is succeeded on the
north by the st. Regis; the Revett
1uartzite has not been penetrated.
The principal ore body observed is
vein striking about west northwest
md dipping 40 degrees S. It's average
| thickness Is only about one foot II
contains galena, sphalerite, chalcopy
/ rite and pyrite in a gangue consisting
! oL;of1,y re ,,,,ortz op1 lcitp The