. Annual report . l at a little under the conven-tions price, without inciting a trade war, which probably neither party wants. Thequotation for bismuth in the United States in 1912 was $ per lb. throughout theyear. In 1913 there will be a new producer, viz., the American Smelting and RefiningCompany, which is to refine the metal at its Omaha plant. Experiments are also saidto have been made in the production of the metal at Chrome and Perth Amboy, ,but no sales were reported from these plants in 1912. Imports for Consumption of Metallic Bismuth into the United States. 1904-11, inclusi
. Annual report . l at a little under the conven-tions price, without inciting a trade war, which probably neither party wants. Thequotation for bismuth in the United States in 1912 was $ per lb. throughout theyear. In 1913 there will be a new producer, viz., the American Smelting and RefiningCompany, which is to refine the metal at its Omaha plant. Experiments are also saidto have been made in the production of the metal at Chrome and Perth Amboy, ,but no sales were reported from these plants in 1912. Imports for Consumption of Metallic Bismuth into the United States. 1904-11, inclusive, in pounds. Year. Quantity. Value. 1904 1905 ],,093 $339,,516332, 1906 1907 1908 1909 1910 1911 •Min. Res. , 1911, Part II. p. 855. **Eng. and Min. Jour. Jan. 11th. 1913. *** 1911, Part I, p. 976. Bureau of /YA=n?s Ko. 4 d -a u> «!>£ * 1 *g £ b ?Q S£>> 0) ll ° fl 2* 1 M <g . 1 — —. 1913 Cobalt=Nickel Arsenides and Silver 45 THE ROCKS AND THKIR RELATIONSHIPS At first, owing to the surface being covered with green timber and to the presenceof much drift material, contacts and good exposures were difficulil bo liml. Facilitiesfor mapping have been much better during late years, as mining has progressed andthe timber has been removed. From the maps which accompany this Report it will be seen that there is con-siderable variety in the pre-Cambrian series. The Niagara of the Silurian Bystem alsoshows prominent outcrops. Between the Niagara and the Pleistocene or Glacial thereare no formations represented in the district.* The author is indebted to Mr. CyrilW. Knight for many of the descriptions of rocks on following pages. The following table shows the subdivisions, based on age relations, that have beenmade among the rocks of the Cobalt area proper. Representatives of most of thesesubdivisions of the pre-Cambrian are found in other areas that have b
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