Mountain Home maverick. [volume] (Mountain Home, Idaho) 1906-1911, 1907-02-21
Ell MORE COUNTY MINES
Resume of Work Done in 1905; From State
IA Inspectors Feprt Just Issued

w hISh is likely to prove the most
interesting page of its important
mining career. The mining pro-
ducts of this county are princi-
palIy gold The formations of its
E1ortbe rn half are principally erup-
tive granite traversed by numerous
,porpbyritic intrusiOns- The top
ography north of the Snake river
plain is rough and rugged but we'll
-~atered and timbered and affords
excellent natural facilities for eco
nonica1 mining
Its mines nave been noted for the
production of high grede ore and
rich placer gold values and many
millions of dollars worth of precious
bullion have been shipped, particu-
aarIy from the vicinity of Rocky Bar
and Atlanta, both of which were
populOus and productive camps
twenty to thirty years ago
ATLANTA DISTRICT The At
1anta lode, which carries some of
the most productive old mines in
the Atlanta district, is one of the
largest and most pronounced ore
bearing channels in the state and
has been compared by well known
geo1ogi lists to the COrnStOck lode OF
Nevada for it's size and persisten-
-cy 1t is associated with a num-
Der of lateral assures that in sew
era1 instances have been good pro-
ducers, and one of them, the Miner
mine. is making a fine output of
gold at the present time.
MONARCH MINE The CEN
trail and choicest section of the great
Atlanta lode is owned by the Attain
IA Mines company, of which T. N.
Barnsdal1, Esq, the well known
Pittsburg capitalist. is the princi-
pal owner, and Mr. Daniel Kirby
as general manager and under whose
personal charge the property has
been extensively reopencd and de-
we1oped during the past four years
Through vertical shaft, six hum
.a5red feet deep, with long levels at
one hundred foot intervals in the
shaft, and also "A long surface adit.
This great lode traversing this
property, which is locally better
known as the Monarch mine. is
from fifty to one hundr ed feet wide,
of altered porphyritic gangue in
granite walls and carries two de-
fined ore veins of shattered quartz
separated by intrusive dixie of
basic igneous rock These quartz
veins invariably carry wide Dor
der on both walls of dis
tiDct1y blue qaurtz in which the
better values contained. Based
on values of five dollars per ton,
this property has developed
and in sight, through it's shaft
works together with the long adit
tunnel fully one million tons of
ore
The pronounced pay borders, how
ever, on these big veins that range
from five to thirty feet wide con-
tain average values of ten to thirty
dollars per ton and quite extern
sSivc reserve of this class of mineral
available. The proportion of VAL
sIcs in the range about sixty
per cent gold and forty per cent
silver
The ores carry traces of antimony
and arsenical pyrites and coarse
yellow sulphurcts of iron. the latter
very rich in gold Tine mineral is
rather difficult to treat and for
uhis reason the mine has not pro-
s1nccd largely since the early days,
when its enriched surface horizons
are said to have yielded secondary
ores of very high value that were
shc chief source of the district S
output
This mine has been fortunate in
falling into such strong financial
hands Extensive and repeated
tests of large lots of the ore have
been submitted to expert metallur-
gistS during the course of the recent
development of the mine with the
result that year ago mill
and other large mechanical equip
xncnt was decided upon These are
now All Oh the ShoNaAld anu Z rap
idly being placed in position They
consist of a new aerial tramway
mile and three-Quartcr long which
was completed in November anC
SUGGEST u11y tried out 1t has car
rying capacity of tVVcnty-one ton.
an hour and when in full operation
develops fOrty-tVvO horse power TO
use else where. 1t is of the 1ates
design and carries some importan
mechanical attachments by which
3OT""0N