The copper era., 1906-05-03

hitherto has been, local estimate:
place it at a number of tens of thous
ands of dollars.
The quartz occurs in assures con
/ tanning usually more or less limonitc,
with which the gold is associated
the assures making usually at con.
tact of prophyry and sedimentaries
or in the porphyry and quartz-por-
phyry dikes.
The bulk of the developments
have been carried on in the doing
of the required annual assessment
work, and for this reason has been
very unsystematically carried on, it
being the object of the owners to
simply gouge out richer pockets of
exceptionally high grade ore, and
leave the balance of the lower grade
milling ore either on the dumps or in
the workings. The Buzzard's Shad-
dow property owned by the Home
Copper company, which is situated
just below the junction of Pinkard
and Gold gulches, has been the most
developed. It is a well defined fissure
be tween limestone and porphyry, of
width of from II to 20 inches, and
has been productive of several thous-
andS of dollars. At depth of ap-
proximately 100 feet was here at
tanned, and at a depth of Is feet
vein of about three feet of $40 mill,
ing ore has been considerably opened
up; a small streak of this vein ran
as high as 81 ounces gold and 56
ounces silver. In no instance has the
sulphide zone been reached. In treat
ing the ores with the old arrastras an
abundance of water was secured
from the creeks or from shallow wells
in the arroyas.
In a general way the Clifton-Mo-
renci gold belt may be considered as
having an extent 12x5 miles, lying
to the north and the west of the
proven copper areas of the region,
extending from the Eagle river on
the southwest to the San Francisco
river on the northeast. The Copper
mountain, or Morenci, districts gold
section is of an area of about four
miles square to the west of Morenci,
and the Greenlee, or Clifton, gold
district lies to the east of Chase
northwest of the San Francisco river.
In this latter locality are located the
Sierra de Orc, era awford, Polaris and
Arizona gold properties, which have
been considerably developed. Aurif-
erouS assures on the Chase creek
divide to the southeast of Morenci,
where are located the Horemeyer
and Clifton King mines, and the
Crawford mines to the north of Met
calf, while somewhat isolated to the
south and north respectively of the
main gold belt, may still be consid-
cred part of it.
The gold ores generally are quartz
porphyry, heavily iron stained, asso-
ciated with more or less lead in car
Donate or oxide and sulphide state, |
and as a rule are readily amenable |
to the NEUTRALITY-SUSPICIOUS.
process. In many places it is possible
to sort shipping ore of a grade of from
$50 to 5000 gold. AS rule the silver
contents in ounces are about half |
that of the gold. The per-
centage of lead varies from a trace |
to 15 per Ct, except in the case of the
galena, where it is much higher: for
instance, from the Stevens group of !
the Gold Belt D. & r. Co. and from |
the Lakenon property number of
tons of galena ore, running cope. lead |
have been mined and shipped. The
gold and silver values in these ores |
to from $50 to 800. The !
percentage of copper in the Morenci
district ores is, as a rule, insignifi- |
can't, while in the case of the Clifton
gold belt they are important, notably |
at the property of the Polaris compa-
ny.
Detailed mention of several de evelop- |
ing properties in various portions of |
the gold belt is here appended.
GOLD BELT D. AND r. COMPANY
This is a recent organization, perteC- |
ted by local parties, that has under
development the Stevens group of 16 |
claims, located in Garfield gulch, ad- |
joining the property of the Detroit
Copper Company on the west. 1t is
about II miles northeast of |
Eagle river, and 3 miles west of Mo-
renci, from which point 1t is ready |
reached by good wagon road. The !
terminus of the extension of the d. |
c. company's tramway system will |
reach within one mile of the property |
Included in the cOmpany's holdings is
a 70-acre mill site tract along Bonan- |
"a gulch near its junction with Eagle
river. Six well defined and paralleing
assures trending northeast-southwest
are covered by the Stevens group for
several thousand feet. The forma-
ton is that common to the entire Mo-
-enci mineral belt, namely, porphyry
IF several varieties, with Gaping of
Iuartzite and lime, and traversed by
numerous main and cross assures and
,ccOnDa nvinU iOneO1S dikeS The