The Arizona sentinel. [volume] (Arizona City [Yuma], Yuma County, A.T. [Ariz.]) 1872-1911, 1879-11-15
YUMA ARIZONA, SATURDAY NOVEMBER 49, 1879.

the whole mine is one vast quarry
whose value can only be estima-
ted by millions.
The general course of the King
vein is nearly northeast by east
and southwest by west. [ was
able to trace it by its surface indi-
cations through the Pioneer right
into the adjoining Globe district
where next to the King mine the
greatest developments have been
made in it.
After leaving the Silver King
a long range of mountains is en-
countereu lying between the Pio-
neer and Globe districts. These
hills are covered with limestone,
quartzite, and granite. Ten or
twelve miles east northeast from
the King the granite crops heavi-
ly through, bearing traces of cop
per, native silver ana gold.
From this point the country IS
covered with a water formation
of debris from the mountains, in
which the mineral belt is very
conspicuous. Its first important
development after leaving the
King is at the Coplin & Cox
mine where ore ranging from
500 to $1,000 in value per ton is
being taken out. Chunks of ma
tive silver are also found with
chloride, sulphurets, and some
carbonate. This mine has 3 shafts
of so, 60 and 105 feet in depth, all
in good ore. From here the de-
velopments on the mineral belt,
in its northeasterly course, are
very frequent and demonstrate
its great width not less than its
high average value.
Two veins parallel with the
/ Cox & Coplin are being exten-
sively worked by numerous
! mines, al Of them turning ont
! rich ore from the surface down
! wards. One of these, the MeXi-
can, is very we'll opened, and will
soon have a mill at work upon
it's ore. The altitude above the
sea at this pOint-the Mexican
l found by measurement to be
34O0 feet, with a gradual general
rise as the mineral belt was traced
up the slope of the Apache
Mountains. In Mexican gulch
leading from Richmond Basin
about two miles and half high
er up the slope, found ar
abundance of wafer, while fores
trees of excellent quality for min
ing timber crowned the hills anc
sheltered their sides in every di
rection. A town site is laid Ou
here. with several good mill-site
adjacent to the water.
Following the rise into Rich
mond Basin, which is 400 fee
above sea level, 1 found mysel
in the heart of a most remarkable
mining camp. Some seventy o.
! eighty mines have heeu more e"
less fully opened in the basin
which includes an area Of abou
! four square miles. These are al
tbickly centered around the Sill
yer Nugget and the Mack AIorri
mines, which were the carries
opened in the district, and whicl
also appears to have struck tn
richest part of the mineral vein
!, A surprising feature of the CAM
, is the enormous piles Of ore tina
crowd the dumps and the entlr
, absence of mills to work it. VI
: a rough calculation there must b
5 at least 100000 tons Oh the groun
! whose general average will equa
! $50 per ton. The Nugget alon
a has between 1000 and 5000 tons
D second-class ore at the surface
ran ging in value from $40 to Sc
g per ton. The whole of this clalI
: is pierced with shafts OF Whlc
q there are no less than eight, a
n in high grade ore from the SUI