COLORADO.
Gold.—The
mine output of gold in Colorado was valued $18,146,916 in 1913, against
118,588,562 in 1912, a decrease of $441,646.
The
Cripple Creek district (Teller County) produced in 1913, or 60 per cent
of the State yield, against $11,008,362 in 1912. The San Juan region,
including Dolores. La Plata, Ouray, San Juan, and San Miguel counties,
produced 84,075,529 in 1913, $4,119,191 in 1912. Increases of $177,500
in ha Plata, $13 San Juan, and $4,876 in Dolores counties were
recorded: bu< the output fell off $269,863 in San Miguel and $90,213
in Ouray. Chaffee and Summit counties also showed increase, and
Boulder, Gilpin, Gunnison, Lake, Mineral, and Park count ies showed
decrease in I9
Of the total material treated, dry and siliceous ore-, which constituted 79 per cent of the total tonnage treated
in 1913, yielded $16,890,236, or 93 per cent of all the gold output.
against $17,391,129, or nearly 94 per cent in 1912. A little over 3 per
cent of the tion was derived from lead ores, and a little more than 2
per cent from the placers. The placer yield was $408,540 in 1913, a
decre of $15,345, and of this Summit County produced nearly 95 per cent
from 3 dredges and 4 placers.
Silver.—The
recoverable output of silver from Colorado mines in 1913 was 9,325,255
fine ounces, against 8,212,070 ounces in 1912. Lake County, whose
production is principally from Leadville, yielded 3,400,318 ounces in
1913, an increase of 399,921 ounces over the output of 1912, and over
36 per cent of the total State production in 1913 Increased
output of silver was reported from Boulder, Chaffee, Cleat Creek,
Dolores, Eagle, Gunnison, Lake, La Plata, Mineral. Parki Pitkin, and
San Juan counties in 1913, and decreased yield from Gilpin and San
Miguel counties.
Of
the total State yield, dry or siliceous ores furnished 6,270,758 fine
ounces, or 67 per cent, lead ores 1,645,186 ounces, or 18 per cent and
lead-zinc and copper-lead ores the bulk of the remainder.
IDAHO.
Gold.—The
recoverable output of gold from Idaho mines in 1913 was $1,344,559,
against $1,381,214 in 1912. For the first time in many years the placer
production exceeded that from lode mines, and this relation is true for
1913 only in Idaho and Alaska. Gold
