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GOLD AND SILVER.
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869
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Ore production in short tons and average extraction value of gold and silver per ton vn 1913. bu States and Territories—Continued.
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The
total quantity of ore sold or treated in 1913 and producing gold and
silver was 45,754,308 short tons, against 41,094,806 tons in 1912,
35,522,890 tons in 1911, and 31,717,912 tons in 1910.
Utah
led in total output of ore producing precious metals, with 10,202,566
tons, followed by Arizona with 7,931,862 tons, Montana with 5,960,118
tons, and Nevada with 5,367,211 tons, the greater part of each of these
vast tonnages being of copper ores with relatively small gold and
silver content.
The
total production of dry or siliceous ores increased from 10,584,777
tons in 1912 to 10,656,738 tons in 1913, but the percentage of the
total of this class of ore decreased from 25.76 per cent in 1912 to
23.29 per cent in 1913. The average precious metal value decreased also
from $7.40 to $7.15 per ton. These decreases in percentage and value
are in line with those of 1912 and 1911 and indicate a slow but steady
downward movement in relative importance of the tonnage and value of
these ores.
Of
the total output of dry and siliceous ores the bulk were gold-silver
ores, but 1,253,116 short tons were true silver ores (against an output
of 848,574 tons of silver ores in 1912). In output of sdver ores Nevada
led with 697,775 tons, against 476,725 tons in 1912, followed by
Colorado with 274,116 tons, against 158,429 tons in 1912, New Mexico
with 117,098 tons, against 110,127 tons in 1912, and Utah with 73,294
tons, against 81,234 tons in 1912. Arizona also produced 26,330 tons
in 1913, Oregon 23,620 tons, and Texas 21,576 tons.
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