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Ch. 1: Gold and Silver in 1913

Ch. 1: Gold and Silver in 1913 Page of 115 Ch. 1: Gold and Silver in 1913 Text size:minus plus Restore normal size   Mail page  Print this page
GOLD AND SILVER.
875
output from all sources, against 93.47 per cent in 1912 and 94.21 per cent in 1911. The production from dry or siliceous ores decreased from 41.25 per cent of the total silver output in 1911 to 39.88 per cent in 1912 and to 39.35 per cent in 1913. The output from copper ores increased from 27.43 per cent in 1911 to 28.39 per cent in 1912, but decreased to 25.63 per cent in 1913. The yield from lead ores de­creased from 25.53 per cent in 1911 to 25.20 per cent in 1912, but increased to 26.17 per cent in 1913. The lead-zinc ores produced 4.01 per cent, 4.26 per cent, and 7.50 per cent of the total for 1911, 1912, and 1913, respectively, and the small output from copper-lead and copper-lead-zinc ores also increased from 0.47 to 1.01 and to 1.06 per cent.
The following table shows the source of domestic silver production by classes of ores, by States:
Source of silver in 191S in States and Territories, as reported from the mines to the United States Geological Survey, by kinds of ore and by States, in fine ounces."
The output of recovered silver from the refining of placer gold was 123,739 fine ounces in 1913, against 163,955 ounces in 1912 and 170;084 ounces in 1911. The production is mainly from Alaska and California.
Ch. 1: Gold and Silver in 1913 Page of 115 Ch. 1: Gold and Silver in 1913
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US Geol. Surv. 1913. Gemstones, Metals.
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