Ch. 1: Gold and Silver in 1912

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MINERAL RESOURCES, 1912.
largest increases in silver in 1912 were 1,362,116 fine ounces in Utah (following an increase of 2,006,816 ounces in 1911), 1,184,462 ounces in Nevada (following an increase of 704,730 ounces in 1911), 881,902 ounces in Colorado (following a decrease of 1,179,430 ounces in 1911), and 746,442 ounces in Montana. There were no notable decreases in silver production in 1912. Of the 26 geographic divisions enumerated as producing silver in 1912, there was increased output in 19 and falling off in but 7. In 1911 there was increase in 15 and decrease in 12.
On the whole, therefore, the silver industry made a much better showing than the gold industry in 1912.
MINE PRODUCTION OF GOLD AND SILVER, BY STATES.
ALASKA.
Gold.—The gold production of Alaska in 1912 was $17,145,951, against $16,853,256 in 1911. The output from siliceous ores was $5,002,399, against $4,226,687 in 1911, and that from copper ores was $153,552, against $86,569 in 1911. The production or placers decreased from $12,540,000 in 1911 to $11,990,000 in 1912.
From the Pacific coast belt, including southeastern Alaska and Prince William Sound, the output of gold in 1912 was $4,904,753, against $4,265,573 in 1911; from the Copper River and Cook Inlet regions, $358,401, against $313,538; from the Yukon and Kuskokwim Basins, $8,857,797, against $9,139,145; and from Seward Peninsula and northwestern Alaska, $3,025,000, against $3,135,000. From the first and second of the above-named geographic divisions there were increases in output, therefore, of $639,180 and $44,863, respectively, and from the third and fourth decreases of $281,348 and $110,000, respectively, giving a net increase for Alaska for the year of $292,695, against a corresponding increase of $726,507 for 1911. The increased output of Alaska in 1912 was due chiefly to the increased production from gold-lode mines, particularly of southeastern Alaska, and copper mines. The production also increased slightly from the placers of the Innoko-Iditarod region, but the output of the Hot Springs, Fairbanks, Seward Peninsula, and other placers declined.
A little more than three-fifths of the gold production of Alaska still comes from the placers, but the ratio is declining as the richer gravels are worked out and the output from gold-quartz and copper mines increases. Increased application of dredging to Alaskan placer min­ing will, however, tend to maintain the placer output at a large figure for many years. The auriferous lode mines of southeastern Alaska produced $4,418,392 in gold in 1912, against $3,904,217 in 1911. The great Treadwell low-grade group of mines in the Juneau district con­tinued to be the heaviest producers. In the Copper River region the great copper deposits were actively developed and increasingly pro­ductive. The Fairbanks camp in the Yukon Basin continued to lead all the placer gold districts of Alaska, but the output there decreased from $4,500,000 in 1911 to $4,150,000 in 1912. The placer produc­tion of the Hot Springs district of the Yukon declined from $785,000 in 1911 to $400,000 in 1912, but that of the Innoko-Iditarod increased from $2,900,000 in 1911 to $3,000,000 in 1912. Seward Peninsula is estimated to have produced about $3,000,000 in 1912, against $3,100,-000 in 1911. Thirty-one dredges were operated in Seward Peninsula,
Ch. 1: Gold and Silver in 1912 Page of 93 Ch. 1: Gold and Silver in 1912
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US Geol. Surv. 1912. Gemstones, Metals.
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