The Pioche record. [volume] (Pioche, Nev.) 1908-1925, 1914-04-18

sunk under the former management
to depth of 100 feet 1t was started
and continued as a modern two-com-
partment shaft, timbered with SKIS |
sawed timbers. and Jagged with 2x12
plank, the dimensions of the hoist
way being 4x41a feet inside the tim
bers, and that OF the manway 3x4La. |
This shaft serves the main workings |
of the mine. and is well equipped, |
with steam hoist, etc. 1t was sunk |
eighty seven feet In the porphyry, at |
which point it passed into the min
eral-bearing formation, a rhyolitic |
quartz. At Zoe feet in the shaft a |
crosscut was run for distance of |
135 feet, all in the vein formation. |
Bucket samples taken from AZ feet 20
125 feet in the crosscut, distance |
of eighty-three feet, averaged a good
grade of commercial ore. From this
crosscut, sixty five feet from the
shaft, drift running south fifty feet,
and north from the same point thirty
feet showed even better averages for
the entire distance. A winze sunk
on the orebody to a vertical depth of
thirty feet showed the ore improving
as it went down, and pitching towards
the shaft, which was then continued
below the 100 catching the ore i'm
mediately and keeping in ore to the
bottom.
Since Mr.. j. j. Stubenbord took
charge as superintendent in the
spring of 1913, the workings as de-
scribed above, have been extended
by $40 feet of prosecuting and drift
ing on the 200-foot level The cross.
cut disclosed eighty feet of COM
mercial ore. This is being opened up
by a drift, now 120 feet in length
which will be continued to the No.
shaft and beyond. Ultimately this
work is expected to develop a large
| body of lowgrade, free-milling ore,
and the present plans call for mill
of 1000 tons daily capacity, the cree
| ton of which it is believed the com
| pany will have under way in the near
| future. The property is amply
| equipped with steam hoist and all
necessary machinery, water system,
electric light plant, and substantial
| buildings, including blacksmith shop,
! two store houses, assay Office, barn,
i boarding house, two large and two
small bunk houses, and superintend-
ent's house and office. There is
plenty of fire wood on the property,
ample for years to come, and saw
timber can be had in abundant guam
tity fifteen miles away.
i The geology Of the Atlanta district
/ interests everyone who visits it, The
rocks were originally sedimentaries,
! limestone and quartzite. These were
cut by an immense dyke of porphyry,
followed by a later intrusion of
rhyolite or andesite, now highly alter.
ed, which appears to have been the
source of the mineral-bearing solu-
tions, and in or adjacent to which
the ore bodies are found. There Is
no well-defined vein, but simply a
big deposit of jasper quartz, carry
ing gold. Underground, the ore fire.
i quently occurs as spongy silicious
framework in which the interstices
are filled with softer material, some
times well colored with manganese,
i both the hard and the soft material
j carrying well in gold. Much of the
i ore deposition was in the nature Of
a simple replacement in lime. In
i places the replacement has not been
so complete, the rocks being merely
shattered, and the gold and accom-
panying minerals deposited in the
| cleavage planes and crevices through
J out the shattered area.
j. Formation Continues.
; The ore-bearing formation continues
, in wide belt over ten miles IL
length In the western extremity are
Gold Springs, where properties show
ing good grade of lead-silver ore
associated with low-grade gold ore
!, are being developed by Chas. Eatol
! and associates of Atlanta; and Rel
Rock, with lowgrade gold deposits
Silver Park is the heart of the belt
9 and the past production of high-grad
, silver ore vii. be eclipsed in tn
. future by the enormous tonnages
. milled on the ground, Of medium
Y grade gold ore. A beginning ha,
e even now been made on the immens
U orebodies found on the holdings q
!, the Nevada Park Mining company, a
+ present being worked by Pat Devil
J, with a small force. Two cars of or
: shipped by them recently netted
q nice profit.
E. c. D. Marriages Holdings.
= Adjoining the patented ground c
!. the old Bradshaw Silver Mining con