Ch. 1: Gold and Silver in 1905

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	GOLD AND SILVER.	125

	Of the other States, Utah yielded 1,785 ounces from lead-zinc ores and Arizona 717 ounces. Neither of these States were represented in these columns in 1904. Practically no gold is derived from oxidized lead and zinc ores, of which only a small quantity is now marketed. Distribution of silver product in 1905. The following table shows the source of silver in the United States in 1905, by kinds of ore and by States: Source of silicon in 1905 in States and Territories, an reported from the mines to the United States Geological Surrey, by hinds of ore and by States.



	Placers.—in 1905 there were 112,826 ounces of silver obtained from placers. This is apparently a large increase over 1904, but to some degree only apparently so, for up to the present time the silver from this source has been largely overlooked. *Dry* and siliceous ores.—The total quantity from this source was 17,187,889 ounces, compared with 16,315,608 in 1904. This is a trifle less than one-third of the total silver production, which this year is divided fairly well between dry ores, copper ores, and lead ores, the latter, however, still predominating. The States rank in production as follows: Nevada, Colorado, and Montana, which States produced each over 1,000,000 ounces. The States which produced over 100,000 ounces each rank as follows: Idaho, California, Arizona, Texas, New Mexico, South Dakota, and Washington. Utah yielded only 94,497 ounces. Nevada and Colorado produced each somewhat over 6.000,090 ounces. Nevada contributes the quartzose gold-silver ores of Nye and Storey counties, equivalent to the Comstock and Tonopah ores; almost the whole quantity came from these districts. Colorado, on the other hand, has some of

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