Santa Fe new Mexican. [volume] (Santa Fe, N.M.) 1898-1951, 1900-06-11
The LONE STAR MINE.
The New Oynide Mill at Woodbury. In the
OoChiti District.
Mining and Scientific Press.)

IllIllS ullt
In Pine canon the Lone Star, or Nav
aio, mine occupies the northern slope or
the mountain, and is developed by a
system of tunnels, n above another,
driven on the vein and all in ore, at the
vertical distance of about 100 feet apart.
The lowest tunnel is now being driven.
1t is in SIS feet, and is expected to cut
the ore body at 900 feet from entrance
and 900 feet below present lowest work
ings, and at a point 700 feet below the
vein apex. The property was opened
six years ago on it's upper levels, from
which $50, 900 worth of ore was hauled
to the railroad and shipped to the
smelters. Then only the high-grade
ores were sought. and large bodies OF
what may be designated as milling ore
were left exposed. On the upper Levels
great chambers were worked out near
the surface, showing a vein expansion
to over 100 feet in width in places. On
the lower levels the vein Is more regu-
lar. between well-marked porphyry
walls, and ranging from 10 to 30 and 40
feet wide. The ores are %sulphides, ar
senides, antimonides and tellurides.
The silver is found mainly in the anti
monial ores; the tellurides are in the
sylvanite and petite forms. 1t Is stat
ed that by fine pul%verization, roasting
will not be required, and that the requi-
site saving can he made by cyanide
work. The Bland mill has been run
ming much of the time for the purpose
of working out the problem of extract
ing the values from these ores.
In the lowest working level a small
hoist is operating by compressed air in
sinking 200 feet to the level of the new
| tunnel. This shaft is $50 feet from the
surface horizontally. Plans are being
made by the Navajo company to erect
a 3OO-ton mill at a point one and a half
miles down the canon, and will connect
mine and mill by an electric tramway.
| AS soon as the lower tunnel shall have
been completed and a connection made
with the upper workings, all the ore
will be handled through it. The Cochitl
Gold Mining Company, the Navajo
Gold Mining Company and the Bland
Milling Company, while each operates
under a separate organization, are all
| under the same general management.
Hence. the electric power for the pro-
posed Navajo mill and other equipment
| will be furnished by the Cochiti power
$3.50 o-e T., Dl1rl y,at11
has ten stamps and cyanide process.
The Cochiti Reduction and Improve
ment Company, under the management
of w. C. Wynkoop, has just completed
a pan amalgamation and cyanide mil
at Woodbury., at the mouth of Colla
canon. The mill has three sets Of rolls
12x24 and 16x30, White-Howell roasters
pans and settlers. When cyanide is
used it is decomposed by zinc-coppel
amalgam in the pans. An electrolytlo
current from q low voltage dynamo is
used to aid in d~ecomposing the cyanide
and in precipitating the gold on the
quicksilver in the pans. The ores from
this company's mine, the Iron King, are
siliceous, S. to 80 per cent insoluble,
with values contained in an arsenical
pyrite, being about 40 per cent gold and
60 per cen silver. The pyrites carry
about ~ per cent sulphur, y per cent
Y arsenic. The gold occurs as metallic, is
readily amalgated, but the silver is ex-
tracted with greater difficulty. The
mill at Woodbury. has not at this writ
ing begun operating.
In general, the ores Of the district
taken as they are mined, without sort
ing, run from $12 to SIS per ton, OF
which gold predominates in some mine
and silver in others.
Mr.. Johnson is manager at the Able
marie, V. V. Clark at the Navajo; 0
P. Posey is general manager of the Co
chit, Navajo and Bland companies
The Cochiti & Northwestern Railway
Company, organized by Maj. ]. H. u
dy, has projected a railway line from
Thornton to Bland. though actual Worl
of grading for it has not begun.