Silver.—The
silver output of the Southern States was 96,523 fine ounces in 1912,
against 108,105 ounces in 1911. Of the total yield the copper ores of
the Ducktown district in Tennessee furnished 89,893 ounces, the
lead-zinc ores of North Carolina 2,394 ounces, and the gold-quartz ores
of the same State 1,902 ounces in 1912.
TEXAS.
The
gold production of Texas is merely nominal and a by-product, being $63
in 1912 and $21 in 1911. The output of silver was 406,067 fine ounces
in 1912, against 424,394 ounces in 1911. This production is almost
wholly from the milling of oxidized dry or siliceous ores of the
Shafter district in Presidio County.
UTAH.
Gold.—The
gold production of Utah in 1912 was $4,265,851, a decrease of $431,147,
or about 10 per cent, from the output of $4,696,998 in 1911. The
largest production was from Juab County, which yielded $1,804,842 in
1912, against $1,500,359 in 1911. The Tintic district, partly in Juab
and partly in Utah counties, produced $1,900,731 in gold in 1912, or 44
per cent of the State yield, principally from dry and siliceous copper
and lead ores. The Bingham district, in Salt Lake County, with its
enormous output of copper ores, ranked second in gold yield in 1912,
with a production of $1,785,532, or about 42 per cent of the total
output. Tooele County produced $450,632 in gold in 1912, against
$584,917 in 1911, mainly from siliceous ores. In the Camp Floyd
district of this county the Consolidated Mercur mine has for nearly a
quarter century been a large producer of gold, but the end of 1912 saw
practically the exhaustion of the ore bodies. Placer gold milling and
amalgamation was practiced in Boxelder and Iron counties in 1912, and
recovery by cyanidation was made in Salt Lake and Tooele counties.
These two processes together produced $440,073 in gold from 171,117
tons of ore and 250 tons of old tailings treated, from which the
average extraction was $2.57 per ton. The recovery by amalgamation
averaged $5.20 per ton in 1912, against $3.23 in 1911, and the
extraction by cyanidation was $2.56 per ton treated in 1912, against
$2.29 in 1911. The total recovery by both amalgamation and cyanidation
was $626,609 in 1911, and $754,127 in 1910—a steady decrease. The
remainder and bulk of the gold production of Utah is chiefly from the
smelting of copper, lead, and dry ores and concentrates, the chief
source being copper ores and concentrates and dry and lead ores. The
placer output of Utah in 1912 was $5,680, from Uinta, Garfield, San
Juan, and Grand counties, against $57,634 in 1911.
Silver.—The silver
output of Utah in 1912 was 13,835,903 fine ounces, against 12,473,787
ounces in 1911 and 10,466,971 ounces in 1910. Juab County produced
6,638,425 ounces in 1912, against 4,673,698 ounces in 1911 (mainly from
dry or siliceous, copper, and lead ores), and Utah County produced
531,478 ounces in 1912, against 934,768 ounces in 1911 (chiefly from
dry and lead ores). The Tintic district (lying in both counties)
increased its output of silver from 5,514,702 ounces in 1911 to
7,073,104 ounces in 1912. Salt Lake County produced 2,218,822 ounces in
1912, against 2,947,481 ounces in 1911 (mainly from copper and lead
ores). The West Mountain or
