Silver.—The
mine production of silver from the southern Appalachian States was
102,166 ounces in 1915, against 100,727 ounces in 1914. About 1,600
ounces came from siliceous ores and placers and 100,543 ounces from the
Ducktown copper ores of Tennessee.
TEXAS.
Gold.—The total output of gold from Texas mines from 1885 to the end of 1915 is given by Charles W. Henderson as $43,121.'
The
gold yield has been very small and has been mainly a byproduct. Some
gold-silver bullion was made in Llano County in 1915, and the output of
gold increased from $234 in 1914 to $1,503 in 1915.
Silver.—Ihe total production of silver in Texas from 1885 to 1915, inclusive, has been 12,417,882 ounces, according to Henderson.2
The mine production for 1915 was 675,473 fine ounces, against 530,817
ounces in 1914. The greater part of the silver continued to come from
the Presidio silver mine and cyanidation mill in the Shafter district,
Presidio County.
UTAH.
Gold.—The
total output of gold in Utah from 1864 to 1915, inclusive, is given by
V. C. Heikes, of the United States Geological Survey, as $86,1S9,230.3
In 1915, the first time in several years, the output of gold showed an
increase to $3,609,109 from $3,265,347 in 1914. The largest part of the
gold was contained in ores produced in Salt Lake County and amounted to
$2,516,844, an increase of more than $350,000. Juab County ranked next
with $910,354, against $933,072 in 1914. The Bingham district, with its
large output of copper and other ores, produced $2,507,477 in gold in
1915, and the Tmtic district, partly in Juab County and partly in Utah
County, produced $916,775 'The placer gold production in 1915 was less
than $1,000, and the output recovered by cyanidation and amalgamation
was less than $30,000. The greater part of the Utah gold (58 per cent)
was derived from copper ores mainly mined in Salt Lake and Juab
counties; lead and lead-zmc ores contained 36 per cent.
Silver.—The total output of silver in Utah from 1864 to 1915, inclusive, has been 339,288,357 fine ounces, according to V. C. Heikes,3
of the United States Geological Survey. The mine production of silver
in Utah in 1915 was 12,313,205 ounces, an increase of 1,158,289 ounces.
The largest production was from Juab County, credited with 4,005,600
ounces (mainly from lead ores), against 4,444,996 ounces in 1914. Salt
Lake County had the next largest output, 3,152,267 ounces (from copper,
lead, and lead-zinc ores), against 2,629,153 ounces in 1914. Of the
Salt Lake County output of silver, the Bingham district produced 80 per
cent. The Tintic district, in Juab and Utah counties, yielded 4,370,984
ounces (mainly from lead ores); and the Park City region, in Summit and
Wasatch counties, produced 3,754,598 ounces, mainly derived from lead
and lead-zinc ores. Altogether the lead ores of Utah yielded 7,759,842
i V. S. Geol. Survey Mineral Resources, 1915, pt. 1, p. 381,1917. >I.lem.
3
Heikes, V. C, Gold, silver, copper, lead, and zinc in Utah (mines
report): U. S. Geol. Survey Mineral Resources, 1915, pt. 1, p. 385,1910.
