The Salt Lake herald. [volume] (Salt Lake City [Utah]) 1870-1909, 1884-01-01

CUutalus on per CeDe, COppcIf OO u
100 ounces.of silver and a trace to So
iii gold per ton.
Cactus; course, east and wes.i
country rock. granite porphyry; ore
contains q per Gems copper. 50 to sc
ounces of silver and a trace OF gold
per ton.
Yellow JACKET; course, north and
south; couutry rock. granite por-
phyry; ore contains 40 per cent lead
80 to $50 ounces OF silver.
Italian marble quarry; course @.
beds, northeast and southwest; thick-
ness of quarry 200 10 400 feet. Tbs
marble is white and mottled and
spotted.
STAR, NORTH STAR AND ROCKY MINING
DISTRICT.
These districts are situated fn Bea-
yer county, In the Picacho mountains
which is a low range in the south
eastern ed of the great Utah and
Nevada Desert. This range is some
what isolated in its position. The
nearest principal business places are
Minersvi!le, Milford AMI Beaver
Minersvile is in etar district, Beaver
county. Utah Terri Dry, sboui 200
miles southwest of Salt Lake City, on
the stage read from that city to
Phoebe in the southeast part OF
Nevada.
The geological structure OF the Pi
cscho range consists of belts of meta
morphic shsls, quartzite and lime
stone. hanked on both sides by igne-
Gus rock, also porphyry, lava and
trap, common to the interior ranges
OF the great basin and desert between
the Sierra Nevada and the Wssatch
mountains. The netamorphic action
on the shale. auarszite and limestone
beds was very lnterse and is distinctly
marked along the TANKS of the range
and in fact hers much more than
in the centre.
The general course of the strata il.
north and south, and dipping east
with 40 to 60 degrees.
My principal examination was con-
fined to the North Camp district
across the mountains east and west
North Camp or Shenandoah is stu
ated on the east flank of the noun
tain facing Beaver Valley.
All the mines situated in thia area
except few, are in a belt Of megne-
sian limestone 600 to 800 feet wide,
running along the lower flank OF the
mountain In reality they are in
the low eastern foothills of the range.
This magnetism limestone or dolo.
mite belt is the chief mineral BOAR
ing rock on the east aide of the mouu-
tain; the veins and ore depcsits are
more numerous and richer here, than
in the schists. quantities and porDhy.
rles.
In this limestone belt the ore de-
posts appear, first a. assure veins
crossing the beds northeast and south.
west; second as strata veins conform
ing entirely to the strike and dip OF
the strata in general. The strata
veins appear only! in the centre OF
this limestone belt, running north
and south with dip east. The fssure
veins run northeast and soutbwes.
with dip of so to 20 degrees north
vest. TEis shows that they cross the
beds obDiquely in the horizontal plan
and at right angles on their line Of
dip as shown in the section formed by
nature. The cash or cross veins here
continue through the lime beds from
ths qusrtzite on the north 10 the
slaty schist on the east.
The Merrimac ia a vein fgsure,
plainly traceable several hundred feet
in the cslcareous, ala.y schist east
of the limestone belt.
There ia every evidence that the
vein assures DO p netrste into the
qusrtzite east of the lime belt. The
gash veinc appear at intervals from
20 to $50 feet, parallel in course and
dip ell along the course OF the lime
stone beds, which proves that they
belong to one family Of assures OF
cuntemporaneous age. These veins
are from three to five feet wide; a.
such points where they cross the bed
veins, they form rich chambers OF
ore as the Shenandoah, Hickory and
others prove.
! call the deposits conformable to
the course and dip Of the strata.
strata veins, but they are not so de-
fined as to JUSTIFY the name well.
Il ia possible that they are only spurs,
and branches from the assures. The
ore in both are the same and it seems
that the filling OF both occurred at
tina same time. The gangue or vein
matter is true vein-quartz: some
of this is compact aud hard, and
others spongy and porous. called
by the miners honeycombed quartz.
The ore is silver. lead, copper, an.
timopy, combined with sulphur.
Some of the surface ores show car
donates of lead, chlorides of silver and
copper in combination with the sui
phur of these metals.
The larger part of this ore cen be
milled by dry crushing and passing
through Stetefeldt furnace; als) they
contain a great deal OF base metals.
The assays range from 81 to $50 dol
lars per ton. The average assay is
rs dollars. Owing to the si.icious