The Arvada enterprise., 1913-09-11
METALS IN COLORADO
PRODUCTION IN 1912 s5.ooo, 900
GREATER THAN IN 1911.
Large Increase Shown In Zinc, lead
and Silver Output, But Decrease
in Copper and Gold
Western Newspaper Union News Service.

Colorados output of gold, silver, cop
per. lead, and zinc recovered from
placers, from Gold-silver bullion, and
from ore sold or treated in 1912, was
S37 ,320,9G6, as compared with S2,41S.-
2lS in 1911, an increase in value for
1872 of $i,g02,74S, or 10 per cent, ac-
cordinG to Charles w. Henderson, OF
the United States Geological Survey.
| These figures are compiled and tabu-
lated strictly as a mine report and
with reference to the locality of each
individual mine, and not with refer
ence to the locality OF the shipping
point of the product.
The production of gold in Colorado
| in 1912 showed decrease in value of
| $4l3,4lS; of silver, an incrr ase of $751;
| 9O2 ounces; OF "copper" a decrease OF
9l7, ,1S5 pounds; Of lead, an increase of
1852, ,97S pounds; and OF zinc Qigured
as spelter and zinc in zinc oXde) an
increase of S7,Gl5,35G pounds. With
increased market prices for silver,
copper, and zinc, there were increases
in value of $l69,G44 for copper, 81, 1885,
434 for silver, $25O.334 for lead, and
S3,730,749 for zinc.
Cripple Creek Principal Gold Pro-
Queer.
The output of Cripple Creek in
1912 showed an increase of $i45,709
in gold, the production beinS $ll ,00S,-
362, or So per cent of the total gold
yield of the state. The shipments of
medium-grade ore from Cripple Creek
to the custom milling plants showed
small decrease, but the shipments of
the higher-grade ores to smelters
showed a small increase and also an
increase in its average content of gold,
as well as a heavy increase in low
grade dump and mine ores sent to
cyanide and cyanideconccntTation
mills in the district. and also an in
crease in amounts recovered from old
tailings, shines, and clean up" of
closed mills. In 1912 cyanidation com
pletely superseded chlorination in the
treatment of Cripple Creek ore The
San Juan region, in Dolores, La Plata,
Ouray, San Juan, and San Miguel coun-
ties, showed a decrease of 100000 in
output of gold, Ouray county showing
the largest decrease. There was also
decrease in output from La Plata
county, but an Increase from San Juan
county. Other counties showing an
increased output of gold were Chaffee,
Gilpin. Eagle, Park, and Summit. The
placer output of gold was $i23,SS5, an
increase of S1O4.126 over the output
of 1911.
LeadvilIe Leads in output OF Silver.
Leadyile CLake county continued to
| be the chief silyer-producing district
of Colorado, its output being 3,0O0397
ounces, which represent 81 per cent
| of the state yield. The chief silver
! producing counties in Colorado in 1912
We're Lake, San Miguel, San Juan, Min.
eral, Ouray, Pitkin Clear Creek, and
| Gilpin, in the order named, these coun-
! ties combined furnished 50 per cent
/ of the total state production. Notable
| increases in output of silver were
| shown in San Juan, Mineral, and San
| Miguel counties, and notable de-
creasos in La Plata and Clear Creek.
| Decrease IN Copper, Increase In Lead.
Copper production in Colorado de-
creased from S,O24,4SS pounds in 1911
to 7.1OT3D} pounds in 1912. Lake.
San Juan, San Miguel, Dolores,
| Clear Creek, and Ouray counties,
in the order named, were the
! largest producers, Lake county
alone furnishing % per cent,
San Jaun, Is; Gilpin, IA; and the
seven counties combined, 92 per cent.
The production of lead in Colorado
increased from 69G79,2 pounds in
| 1911 to 752i22G7 pounds in 1912.
| Lake county ranked first, and was fol.
lowed by San Juan, Pitkin, San Nj.
! guel, Mineral, Summit, and Clear
Creek counties. in the order named.
Zinc Output 100000 Lbs. Greater.
The zinc output OF Colorado Tin
terms Of spctcr and zinc in zinc
oxide was l32,222,S12 pounds in 1912
as compared with 9i,G07 ,ijG pounds in
! 1911, an Increase for 1912 of 1885,
3jG pounds in quantity and Of $780,
]
crease for the year Of 3i.335, 1897
pounds, furnished 1O5,9i57s3 pounds
or so per cent Of the state yield. The
output of zinc carbonate ore from
LoadyIno was 1i2,7S2 tons of 2g.2 per
cent zinc against S3,JO5 tons Of 81
| per cent inc In 1871.
Increased production Of zinc was al.
so made in Chaffee. Clear Creek
Dolores. Eagle. Fremont, Ouray, Pit
kin, Saguache, San Juan, and Sum
nit counties, and appreclablo de.
crcasoa were made In Mineral Park,
and San Miguel counties. Zinc pro.
ductlon .u concentrates amounted to
| 4G.Oj3g5i pounds, ana in crude ore to
| SGlGS,s5s pounds
The znr sulphlde ore shipped in.
creased from 1876 tons Of 2a.3 per
cent zinc Iu 1911, to lO4.1I8 tons Of
23.s per cent zinc in 1912.
] mn