Mohave County miner. [volume] (Mineral Park, A.T. [Ariz.]) 1882-1918, 1916-07-15
NORTH STAR DRIFTS
INTENDED TO OPEN
THREE ORE BODIES

Three objective points of unusual
promise are being sought in as many
openings on the 4OO-feet level of the
Oatman-North Star, two by drifts and
the third by a crosscut. The drifts are
out over 20 feet each and the cross
cut slightly more than so feet.
The drifts are on the main ledge,
close to fault plane which is discern
ible on the surface. Their location was
selected in a manner to avoid running
away from the ledge on its dip in an
incline shaft. At that point the ledge
is narrow, averaging probably eight
feet, but on either side and within a
couple of hundred feet it is of enor-
nous width. Likewise, the surface
values are greater and by a less
amount of drifting either way it is
hoped to get these in proportionately
increased EsSp that level The
big BODY was opened
20 70 dGDth
of 30 feet and gives an average across
the bottom of an incline shaft of $3.50
a ton. The ledge is 70 feet wide on
top.
The southeastern trend of the ledge,
interrupted, as it is, is thrown to the
north for 75 or 100 feet, with a con-
tinuous winding narrow vein between.
1t widens again, not to the 7O-fOOt
width of the other lens, but about half
that width and the values are better
still, one assay being recorded as hav-
ing gone S37. These are the Objec-
tives of the two drifts and Manager
R. R. Moore is using his best en-
deavors to reach both in record time.
The third is a parallel rhyolite dyke
to the southwest. 1t is identical with
the famed rhyolite dyke of the United
Western. In less than $50 feet the
crosscut will tap the dyke. In so do
ing it VII expose two lodges, both of
which on the surface were never very
badly lost. The first on the hanging
wall of the dyke crops under foot
trail and shows quartz and spar plen-
tifully, though a pick was never struck
there nor a panning nor assay made.
The other on the foot has been opened
in three or four places and has yield
ed values from $40 to $50 a ton.
To these Mr.. Moore attaches great
importance. He thinks they will be
found at depth to be a replica of the
Goldroad, where two veins are SINH
larly placed to fortify a rhyolite dyke
and where winding crosscuts must be
driven constantly or miss numerous
bodies of rich ore that are liable to be
turned up anywhere in the dyke itself
between the two fences of quartz,
which virtually make dyke and all into
one pOnderOus ore body.
The material found in the North
Star shaft and lateral workings diff
fers from that of any other mine in
the camp. Nearly every pound Of rock
taken out now carries black manga
nese. Some resembles slightly that of
the United Eastern and Pioneer, with
vugs and cavities. In others the man
ganese is of solid form and lusterless
but lots of it. The vein matter car
ries this and quartz and spar,
making it a streaked and spotted
black and white.
The formation surrounding the ledge
to the present depth is even more of
a mystery. It is not andesite, rhyo-
lite nor any of the known rocks
around here, but a fine grained dark
green and almost black, with no vari-
ations. On the surface little patches
of it slightly resemble shale and it