SOUTH DAKOTA.
The total value of the gold produced in South Dakota from 1876 to the end of 1920 is given by Charles W. Henderson,4
of the United States Geological Survey, as $223,623,669, and the total
output of silver for the same period as 6,800,993 fine ounces.
Gold.—The
mine production of gold in South Dakota in 1920 was $4,676,470, against
$4,863,040 in 1919. The output was almost wholly from siliceous milling
ores of low grade, of which nearly 65.5 per cent was recovered by
amalgamation and the remainder by cyanidation. The Homestake mines and
mills produced $4,410,194 in bullion from 1,274,944 tons of ore treated.
The small yield of placer gold (28 ounces) came from Lawrence County.
Silver.—The
mine output of silver, derived mainly from refining the gold bullion
produced, was 90,795 fine ounces, or 25,698 ounces less than in 1919.
SOUTHERN APPALACHIAN STATES.
The
total production of gold from 1799 to the end of 1920 in the southern
Appalachian States, as shown from data compiled by the Bureau of the
Mint and the United States Geological Survey, has been $51,035,798. The
figures credit Alabama with $766,632, Georgia with $17,825,268, North
Carolina with $23,629,580, Tennessee with $264,502, Virginia with
$3,296,569, South Carolina with $5,181,842, and Maryland with $71,405.
Gold.—The
combined mine production of gold in the southern Appalachian States in
1920 was $8,337, against $6,530 in 1919. Tennessee led with $5,830;
North Carolina was next with $1,147. The fold produced in Tennessee was
from copper ores of the Ducktown istrict. The production of gold from
placers amounted to 57.18 ounces. Copper ores, from Tennessee, yielded
about 282 ounces of gold, and siliceous ores from North Carolina,
Alabama, and Georgia yielded about 36 ounces.
Silver.—Copper ores in Tennessee yielded 110,719 ounces of silver in 1920. Siliceous ores and placer bullion yielded only 21 ounces.
TEXAS.
The
total output of gold from Texas mines from 1885 to the end of 1920 is
given by Charles W. Henderson as $43,607, and the output of silver for
the same period was 15,293,734 ounces.
The small annual yield of gold has been mainly a by-product, and none was reported in 1920.
The
mine production of silver from Texas in 1920 was 511,401 fine ounces,
against 538,642 ounces in 1919. The greater part of the silver
continued to come from the Presidio silver mine and cyanidation mill in
the Shafter district, Presidio County. The silver contained in copper
ores shipped in 1920 amounted to 2,800 ounces.
* U. S. Geol. Survey Mineral Resources, 1920, pt. 1, p. 152.
