The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1913-10-23
us. GEOLOGICAL SURVEY
CONTINUED from Page 81

the Last Chance and Bell prospects
Of three tunnels, two Of which, stu.
ated near the outcrop Of the vein
have not been worked for severa
years and are now inaccessible. 4
1100-foot tunnel taps the vein severa
hundred feet below the lead Of the up.
per workings The developments OF
the vein, which strikes about N. II
degrees W., consist OF west and east
drifts. In the west drift work has
been discontinued and the ground i;
caved In several places, but the east
drift was being extended al the tim
Of visit.
| The greenish sericltic quartzites 81
the Burke formation are well exposed
in the tunnel section. They show In
tense folding and faulting, to which
Is attributed the shalelike appearance
Of the juartzites. A syncline is ap.
parently exposed In the tunnel, as
north and south dips we're noted on
the sides Of greatly contorted zone
In which are flat-lying beds
The naturalization revealed In the
lower workings consisted Of the depo.
sition Of irregular punches of quartz
and siderite and the replacement Of a
quartzite bed, along fault plane. by
fine grained, sulphides and secondary
silica. The impregnated quartzite bed
Is about inches wide and Is fairly
regular In width In the east drift, but
its form in the west drift could not be
determined because Of the timbering
in that portion Of the mine. Stibnlte.
galena, pyrlte and chalcopyrte were
noted in specimens from this vein. OF
these minerals stibnite is the most
abundant The minerals are strained
In appearance owing to movement
along the fault. No assay of this ore
was made, but II Is said to carry sill
yer. Specimens from the dumps Of
the upper workings indicate ore en-
tirely different from that of the vein
in the lower tunnel but very similar to
the ore from the Last Chance, Bryan
and other prospects on this vein. Ga
lena and cerusite in porous limonite
from the oxidation of slider
lite were noted but the antimonial min
erals, stibnite and tetrahedrlte, were
not observed. This property has made
no ore shipments.
Bell.
The Bell prospect Is short dis
lance east Of the Ben Hur. The work
ngs are not extensive on this prop
arty and are now inaccessible owing
70 fire and caving. The oxidized ore
in the dump contains scattered pieces
IF galena. The surface showing Is
,ery similar to those Of other pros
oects situated on this vein.
Tarbox.
The Tarbox mine is on the west
tide Of the middle fork Of Packer creek
lbout 3 miles from Saltese. A 500
DOT shaft has been sunk on the vein
,ut the mine buildings were burnt in
$40 and the mine has since been idle.
is shaft being filled with water. The
re on the dump is of the same general
haracter as that in the Last Chance
nd Bell properties; it consists main
Y Of siderite, quartz, galena and py-
lite.
n Meadow Mountain.
The Meadow Mountain property is
4 small gulch tributary to Packer
reek, about half mile north of the
rominent isolated hill after which 1t
, named, in the same zone of miner
lization with the other principal
of Packer creek basin. II
, developed by five adits in only two
which has any considerable work
cen done.
The country rock consists of gray
n flaggy serlcitic quartzite. which
belongs to the Burke forma-
on. The general strike Is north
'esterly. The most remarkable geo.
'gic feature Is the prevalent crush
-