Eureka daily sentinel. [volume] (Eureka, Nev.) 1871-1887, 1881-04-30

ter1stfcS.
The above named mines are situated
about 10 miles southwest from the town Of
Eureka, and connected Herewith by q
good natural wagon road open at all sea-
sons OF the year, except February and
March, thus affording easy communica-
ton with the nearest railroad point, the
terminus Of the Eureka & Palisade Rail-
road. The Prospect Mountain District
adjoins the Eureka Mining District and
is fianked to the east and south by one OF
the most prosperous mining regions upon
the continent.
GEOLOGICAL.
The mines located upon the western side
OF Spring Valley and the ~outcropping
mineral veins occur in stratifed and
metimorphic limestone, which upon the
surface gives evidence Of more or less dis
turbance, but not sufficient to destroy the
general uniformity and dip Of the strata,
which has a general dip Of about so de-
! grees to the northeast. The superimposed
limestone is underlaid by q quartzite and
mica schist which makes its appearance
a short distance to the south, southeast
and southwest Of the ground embraced
Al tnC loC6biOub uclcdittI utBcTlDeQ, 1lb
fosseliferous remains in the limestone are
characteristic Of the rocks OF the Upper
Silurian, to which age they doubtless be-
long. 1t is worthy Of note that all of the
rich mines Of Eastern Nevada are found
either in the Upper Silurian or Devonian
limestones.
THE MINES.
The mines were first discovered in 1869,
INV II II Ilooo and nkbarc 81 tho oarno
date that the celebrated Eureka deposits
commenced to attract attention. The
principal locations we're the Five-twenty,
Magnet and Murray and the Telegraph.
the rich surface ores Of which were sufi-
cient in magnitude to stamp them as ex-
traordinary deposits. There were no
milling facilities nearer than Austin, Q
distance Of 80 miles, and as a consequence
the ores had to be transported to that
point at a cost ranging from $50 to $50 per
ton. This exorbitant freight tariff, to-
gether with charges for milling and reduc-
ton, necessitated q close asserting Of the
ores, and only the high-grade rock was
shipped. A large amount was sent forward,
despite these disadvantages, and the re-
turns showed q value ranging from $50
to 5000 per ton, and in choice selections
as high as 81 700. As depth was attained
the precious metals became more generally
diffused throughout the quartz, and ship
mcnts ceased. From that time the loca-
tions have only been worked in q desultory
way. the not possessing sufficient
capital to erect q mill near their mines.
or systematically develop them. Their
faith, however, has led them to comply
with all the local and congressional laws,
and they have held undisputed possession
nj IN tha prooant f;poa doin0 tho uaaaccarv
assessment work to comply with all re-
quirements.
DESTRUCTION OF THE RECORDS
The records Of the district were de-
stroyed by fire at the burning OF the town
Of Eureka in 1878, but the district was i'm
mediately reorganized, and the titles to
the locations perfected beyond controversy
or dispute. The group to be considered
are known as the Five-twenty, Woodchop-
per and Duker mines. They form @ con-
tinuous series, and embrace within their
boundaries all Of the vein and outcrops Of
the Magnet and Murray and Telegraph
lodes-referred to above. Through them
the ledge is easily traced. The main lode
has an average thickness of from four to
seven feet. Numerous smaller veins, or
feeders. make their appearance at different
points on the surface, and from the gen.
eral strike and direction ii is probable that
they are stringers from the main ledge &C. |
curing at the contact between the two
formations.
FIvE-TwENTY.
The Five-twenty location is 1900 feet
long by 800 feet in width; situated upon
the lower spur OF the Spring Valley range;
easy Of access, the ground sloping gently
into the valley. The outcrop of the vein,
averaging q width OF six feet, is met with
at different points and easily traced. In
the center a shaft fifty feet In depth has
been sun and q twenty-foot drift run from
the bottom. The drift passed through and
the face Is now in quartz and ore. An in
cline, sunk about 100 feet to the northwest
Of the shaft, has opened a fine ledge, the
rock assaying 500 per ton. The vein dips
at an angle Of thirty degrees. At each end
OF the claim open cuts have been made,
exposing in each locality e mass OF ore that
with proper facility for working would pay
a handsome profit.
THE woopcHoPPER.
The Woodchopper embraces 1900 in
length by 600 in width. The o~utcroppings
Of ore are bold and well defined. In q
small ravine in the center OF the claim an
outflow OF quartz and ore occurred, which
when worked by open cut proved to be q
most valuable deposit. From this point
large shipments were made to Austin, and
were continued until the ledge was appar-
emily lost. Later developments showed
that o slip or fault had occurred. A shaft
sunk down the ravine at a more essterly
point struck the vein at q depth OF twenty.
Ave feet, from which, in the beginning OF
the past Winter, there was . lot OF the
finest milling ore extracted that Eureka
county can boast Of. The ore still remains
at the mine and will assay from 5000 to
81, 000 per ton.
THE DuxER MINE.
The Duker claim embraces 1900 feet in
length by 600 feet in width. Considerable
surface work has been done upon the crop
pings and q number OF tunnels and cross
cuts run in upon the vein at inherent
points, exposing q ledge Of from one to
three feet in thickness. A considerable
quantity Of high grade ore has been ex-
tracted at different times. All OF the OLD
and rich locations have been Incorporated
within the boundaries OF these three mines;
The main ledge. which can be traced
through them, gives substantial evidence
OF being something permanent, and OF
vast richness when depth is attained. A
series Of assays made at San Francisco IN
August, 1880. show as follows: No. !,
1914 ounces Of silver per ton No. 2,S74;
No. 8, 207 No. 4, 100 /; No. 5, l02; No. o.
so. The samples were taken from the Five
twenty and W~oodchopper mines. The
majority of the ore is free milling, there
being no rebellious constituents n re-
quiring no scientific manipulation to re-
duce the ore, the ordinary mill process
working it up to 90 per cent Of fire assay.
VALUE OF SHIPMENTS MADE.
The following estimate, which is rather
under than over the actual amount of pro-
duction, has been compiled from the most
reliable source attainable Five-twenty,
so tons, $40 per ton, IS, 600 /; Woodchopper,