Tonopah bonanza. [volume] (Butler City [i.e. Butler], Nev.) 1901-1909, 1904-04-09


tanning a series Of stringers. From
a point fifty feet south Of the shaft
in this crosscut, an east drift, known
as east drift No. ], has been extended
468 feet. This drift in its eastern
extremity was swung to the south,
being in the nature of a crosscut at
that point. A strong ledge from
four to six feet wide has been exposed
for about $50 ieet in length by this
drift having an east and west course,
and at a point 60 feet east from the
main south crosscut, a winze has
been sunk "a feet on the ledge men
toned. This ledge shows very high
values in streaks and lunches
throughout the same, and the char
acter of the ore is such, that it is be.
lieved that it is a part of the Montana
Tonopah system of veins. At the
eastern extremity of this drift a
small ledge carrying fair values was
encountered, running east and west,
and has been followed a short dis
lance. From the east drift No. /,
at a point 100 feet east from the
main south crosseut, a north ros
cut, known as north crosscut No. l,
has been extended 257 feet, and in
this crosscut three small veins were
encountered carrying fair values.
At a point $50 feet east, in the east
drift No. /, east of the main south
crosscut, a north %crosscut, known as
north crosscut No. 2, has been ex-
tended 80 feet. This exposes a small
vein running east and west and
/, standing nearly perpendicular, which
carries very good values, assays up
wards of $3.50 having been obtained
from the same. From the eastern
end of east drift No. !, a south ross
cut, known as south crosscut No. 2,
4 has been extended 10 feet. This
shows some stringers of quartz. At
: a point 100 feet south of the shaft in
t the main south crosscut, a west drift
e has been extended 10 feet, on a small
c vein running east and west which
carried low values. At a point 800
feet east of the main south crosscut.
n in the east drift No. l, a heavy fault
n plane having a course northwest anC
southeast with a dip to the southwes'
of 45 degrees was encountered. |
is believed that this fault plane is ont
located by Mr.. ]. E. Spur on tn,
" surface, and shown in his maps o
L. the district as existing in that sec
.o ton. There is every eason to be
lieve that this fault plane has had
" marked influence on the disposition
~ of ores in this section of the district
IN west of the plane the ores being {
re comparatively low grade, while cas-
of this fault plane high grade value
in all of the streaks, stringers an
10 veins being the rule. There is
lis marked change in the character {
t. the formation as well, east of tn
"a fault plane the ground being a fin
grained porphyry, carrying consider
W able quartz, and being similar to tina
re surrounding the lodges in the Ton,
ot pah Extension and Mon tana- Tonopal
nd while west of the fault plane
"a coarser variety of porphyry is show
Taken altogether, the works
ISL this company show 785 feet of doub
ne compartment shaft sunk and 17S
on feet of drifting, prosecuting al
sinking on the no foot level. VIII
this work has not resulted in ii
'eh finding of large bodies of high graz
ore up to the present time, it hi
ut, demonstrated, together with the d
10 velopment in the Tonopah Extensio
Montana-T onopah, Midway, Men
"s mara, and West End that the il
De portant vein systems of the Tonopi
lift mining district extend and car
or their values in a westerly directio
400 that the Mizpah ledge passes throul
the property of the Ohio Tonop
nat company at a point about 500 fe
'ah south Of the shaft; that it is pre-
we'd able that the Valley View ledge a
IN passes through the property of IL
company, further south lin
!" ground which has not as yet be
In cross CUT; that a large proporti
hat of the strong Montana-Tonopah s.
ken TEN of veins passes through
20 property of this company in t
northern and eastern portion of t
ac- same; that there are two classes
ON what is known as lode porphyry, c
led fine. grained in which lodges are 6
tion parently enriched, and another
coarse. grained in which they a
men lower in value; that the lode porpl
ter ry itself dips to the west at a |
nee angle and that in this portion of
,ers district it also dips to the south, a
a in the Gaping is consequently thick.