UTAH.
Gold..—The
total output of gold in Utah from 1864 to 1920, inclusive, is given by
V. C. Heikes, of the United States Geological Survey, as $100,242,530.5
The
mine production of gold decreased from $2,159,471 in 1919 to $2,014,556
in 1920. The Bingham district (Salt Lake County), produced $1,054,915
and the Tintic district, partly in Juab County and partly in Utah
County, produced $603,690. The placer gold in 1920 amounted to $453
and. the output recovered by cyanidation and amalgamation was about
$87,525. About 32.7 per cent of the Utah gold was derived from copper
ores mainly mined in Salt Lake and Juab counties; lead and lead-zinc
ores contained 32.9 per cent.
Silver.—The total output of silver in Utah from 1864 to 1920, inclusive, has been 404,233,061 fine ounces, according to Heikes.6
The
mine production of silver in Utah in 1920 was 13,106,976 ounces, an
increase of 1,457,015 ounces. The largest production was from Juab
County, credited with 4,650,273 ounces (mainly from lead ores), against
4,822,227 ounces in 1919. Utah County had the next largest output,
2,282,461 ounces (from lead and siliceous ores), against 1,993,381
ounces in 1919. Of the Salt Lake County output of 2,053,372 ounces, the
Bingham district produced 1,589,972 ounces. The Tintic district, in
Juab and Utah counties, produced 6,884,740 ounces (mainly from lead
ores); and the Park City region, in Summit and Wasatch counties,
produced 2,672,389 ounces, mainly from lead and lead-zinc ores.
Altogether in 1920 the lead ores of Utah yielded 7,895,007 ounces of
silver, the copper ores 452,915 ounces, the lead-zinc ores 630,875
ounces, and the dry and siliceous ores 3,955,771 ounces. The crude ore
smelted in 1920 contained 10,338,616 ounces and concentrates contained
2,191,040 ounces.
WASHINGTON.
The
total production of gold in Washington from earliest mining to the end
of 1920 is given by C. N. Gerry, of the United States Geological
Survey, as $28,127,072, and the total production of silver as 7,822,595
fine ounces.6
Gold.—The
mine production of gold in Washington in 1920 was $120,860, against
$252,862 in 1919. Of this production nearly 95 per cent was derived
from ores shipped directly to smelters, and more than 1 per cent came
from placers; siliceous ores supplied nearly 95 per cent and copper
ores less than 1 per cent. Ferry County alone produced $110,278 in
1920, against $245,141 in 1919. Nearly all the yield from Ferry County
was, as usual, from the Republic district.
Silver.—The
mine production of silver in Washington decreased from 259,384 ounces
in 1919 to 199,678 ounces in 1920, of which Ferry County produced
33,274 ounces, mainly from siliceous ores, and Stevens County 134,037
ounces, mainly from copper ores.
5 U. S. Geol. Survey Mineral Resources, 1920, pt. 1, p. 285. 'Idem, p. 261.
