The Wallace miner. [volume] (Wallace, Idaho) 1907-current, 1920-01-29
Pine Creek Mines and Prospects As Re-
ported By Government Biologists
ANTHONY VEINS.
Salient Features.

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The anthony veins have a wide
distribution and apparently are not
connected with any single zone of
naturalization, for they have various
dips and strikes. All are in Prichard
rocks, and their mineral composition is
essentially identical The northern
most vein, the Occur d'Alene Anti
mony, strikes n. 60 degrees f. and
dips 35 to 90 degrees NV; the AL
brecht vein strikes n. 10 degrees and
dips 60 degrees W.; the Pearson vein
strikes n. 40 degrees east and is verti-
CAL the Star Anthony vein strikes
east and dips % to 50 degrees S. Con-
centrates from the Occur d'Alene An
timony contain as high as So to the
ton in gold, and from parts of the Star
Anthony vein assays showing So to
the ton in gold were obtained. No
information was to be had as to the
gold and antimony content of the
Pearson and Albrecht veins Stibnite
and quartz, associated with pyrite,
are the dominant minerals of the
veins Galena was nowhere observed.
but sphalerte occurs rarely in the
Star Anthony mine. Stibnite re-
places the slate and vein quartz, its
relation to the quartz being shown by
small needles lining vugs in the quartz
and by quartz veinlets ending against
the stibnite.
Occur d'Afene Anthony.
The Occur d'Alene Anthony Min
ing company owns two unpatented
claims in the SEA of section 6, T. As
~, r. e. The property has been
worked internationally since 1885. The
last work was begun in the summer Of
1915, and to the present time consid-
cradle ore has been shipped. Ore to
the value of 10000 has probably been
produced, though the records of the
early operations are very incomplete.
About 1000 tons of stibnite ore is said
to have been roasted, and the sublim-
ed product was conveyed to bag
house and collected This roasting
plant burned down and was super
seeded by a concentration mill with a
capacity of Is tons a day The con-
centrates were shipped in 1916 to the
International smelter at Salt Lake
City, Utah. The vein crops out on the
west side of Pine creek, and in the
early days boulders of stibnite were
worked from the creek bed. The vein
occupies a fault or shear zone in black
states of the Prichard formation,
50 to 60 degrees NV. 1t is exposed in
surface workings for about 400 feet,
and the greatest depth attained is
about ITO feet on the dip of the vein,
The foot wall formation appears to
conform with the strike and dip OF
the vein for the most part, but the
rocks on the hanging wall side are
extremely folded and contorted and
contain seams of black gouge, which
in places extend into the ore, The
ore ranges from less than one foot to
five feet in width and consists OF
stibnite in gangue of quartz and
unrepaced slate. Movement along
the fault flssure subsequent to the
formation of the vein has greatly
crushed the quartz and much of the
stibnjte is ground to a slickensideo
black fine grained aggregate The
ore shoot is cut off on the south by
q fault containing a vertical quartz
vein which trends N. Is degrees w
The amount of displacement is no
known as the continuation of the an
timonv vein has not been fount
south of the quartz vein. The ore
shoot is said to rake to the south
west. The ore as it comes to th'
mill is roughly sorted ny hand, thf
high grade coarse material beins
picked out. The rest Of it is crush
ed and passed to iigs where three
nroducts are made. The first ant
second grades contain about 40 pc
cent of anthony: the third product
which is of lower grade, is regroun'
and treated on Whitley tables bu
there is still considerable loss II
the tailings.
The company plans to treat the or
by fine grinding and flotation IN
ratio of concentration is about ton
into l, and an average of tons o
concentrates was being produces
daily. Three cars of concentrates ag
gregating so tons were shipped i
June, 1916. According to the smelte
returns from a carload of concen
trates shipped in April, 1916 47,32
rounds of ore yielded 1886 per cen
of anthony and 0.24 ounce OF gold I
the ton. The antimony was sold a
the rate Of 1858 a unit and the goi
at rs per cent Of the assay value
the ore, at 500 an ounce
Star Anthony.
The Star Anthony group consist
of nine unpatented claims that oc
cupy a ridge between Stewart cree
and the east fork of Pine creek. Tn
ore body was discovered in 1914, bt
no ore shipments were made unit
1915. when three carloads of ore wei
shipped. About 1900 feet of develop
ment work has been done IN thre