The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1917-06-07
TARBOX READY FOR MILL
REPORT OF ENGINEER
SHOWS THAT COOP PROFIT CAN
NOW BE EARNED--STOCk
FOR ASSESSMENT.
Asst WEEK Frank ]. Davey,
mining engineer and geologist

mining engineer and geologist
of this city, made a thorough
inspection of the TarboX mine
and his report has been mailed to the
stockholders of the company. His in
IVestigations We're confined chiefly TO
the showing between the 400 and GOO
levels and the exploration work on the
600, to which frequent reference has
been made in recent issues of the
Miner. Mr.. Davey finds the width of
the vein as determined by the cross
cut to be so feet and both walls are
Enthusiastically Burke quartzite. Con-
tinuing Mr.. Davey says
Conditions Characteristic of Occur
d'Alenes.
",rhe vein still exhibits a crushed
condition in the main crosscut where
it is so unusually wide, but clearly
shows a tendency to become more
compact and solid in driving west
where the walls seem to be coming
closer together. There is a large
amount of mineral disclosed by this
work, concentrating into, at least two
bodies of commercial ore, apparently
of good workable size, viz The
southeast shoot which is intersected
by the main crosscut from the shaft,
showing a width of Is feet and a
length of 80 feet with ore in both
faces. A raise is going up rapidly
on this ore body and it bids fair to
be an important discovery for it is
undoubtedly an entirely new ore shoot,
which comes to the surface east of
any known surface openings.
The grade of this ore body as
shown by my samples and assays is
as follows, viz Lead 3.5 per cent
zinc per cent, silver 1.50 ounces
"The other ore body is in the west
drift and is the same ore shoot de-
yeloped in the old workings on the
400, 500 and $50 levels of the winze
This shoot has width of to 10 feet
and is still going west after being fol-
lowed some 25 feet. 1t shows strong
and has a healthy appearance. The
grade is approximately the same as
the other ore body, possibly a little
more lead
1.-THE character of the mineraliza-
tons is essentially of the same type
as the well known producers of the
Occur d'Alene district. viz Spathc
iron, quartz, galena and zinc blende,
replacing the quantities. in the frac-
lures of a brecciated zone. The zinc
blende is very high grade; selected
samples yielding from 1913 to 62 per
cent with but little iron. These con-
centrates, on account of their purity,
would command handsome premium
in the zinc ore market"
Mill a Necessity.
the action of the Osburn fault on the
vein structure. and predicts that
little more depth will find the vein
in a more nearly normal condition,
and a more compact ore body. Sink
ing the shaft to the 500 is approved,
and he calls attention to the splendid
water power of the company and urges
its immediate utilization. which can
He strongly recommends building a
mill and on this point says:
Preparations for a mill should be
made for ] think the development In
the near future will fully warrant it.
If you had mill of $50 tons capacity
now you could supply it with that
amount of commercial ore. Owing to
the excellent economic conditions sur
rounding the property, the cost of
mining and milling would be extremely
low, approximately $145 per ton"
In detail Mr.. Davey shows that
there is a good profit to be earned by
the Tarbox company in mining the ore
now available. The ore will average
about 8 per cent lead, rs per cent
zinc and 1876 ounces silver. Calculated
*on basis of present market prices
of 10 cents a pound for lead, 9 cents
for zinc and IS cents for silver, he
shows a value Of mill product of lead
silver and zinc of $3.50. Against this
is charged cost Of mining and mill
ling, development, general expense and
depreciation, amounting to $2.25, leav-
ing a net profit per ton of $6.6S. He
strongly urges the company to push
development with the greatest possible
energy in order to place the mine in
a productive stage at an early date in
order to secure the advantages OF high
metal prices.
Accompanying the report Of Mr. Da.