23

The vein strikes north 75 degrees east and dips 60 degrees southeast. It has been traced for 100 feet along its strike. The ore is bunchy and con- sists of sphalerite, galena, tetrahedrite, pyrite, and chalcopyrite. The sulphides consitute less than 5 per cent of the vein material. A sample containing about 25 per cent sulphides assayed: gold, 0:10 ounce a ton; silver, 56-14 ounces a ton. A sample containing no sulphides assayed 0-01 ounce a ton in gold.

Two hundred yards down the slope at an elevation of 5,400 feet another quartz vein, varying in width from 2 to 7 feet, is exposed. It occurs in the granodiorite as a filling along joint planes that strike north 20 degrees east and dip 60 degrees southeast. At various points along its strike it is offset from a few inches up to 5 feet along a second set of joint planes, which strike north 60 degrees west and dip 70 degrees northeast. This vein could be traced for at least 2,000 feet. It is very sparsely mineralized with galena, sphalerite, tetrahedrite, and pyrite.

Elsewhere on the property quartz stringers, 4 to 1 inch wide and mineralized with pyrite, occur along the joint planes in the granodiorite.

American Boy Group (15)

References: Ann. Repts., Minister of Mines, B.C.: 1910, p. 87; 1911, p. 79; 1912, p. 112; 1913, p. 106; 1914, pp. 197-199; 1915, p. 76; 1916 p. 89; 1917, p. 104; 1918, p. 117; 1923, p. 107; 1927, p. 181. Geol. Surv., Canada, Sum. Rept. 1912, p. 104; Mem. 110, 1919, p. 33.

The American Boy mining property is on the southwest slope of Nine Mile Mountain, 6 miles northeast of Hazelton. The Nine Mile Mountain motor road passes along the base of the mountain at elevation 1,575 feet, one-half mile west of the mine workings, which lie between elevations of 2,500 and 2,900 feet. The camp and workings are reached from the road by a switchback horse trail. The property comprises eight Crown granted claims, which were first staked by D. A. Harris in 1910. Between 1910 and 1915, Harris Mines, Limited, carried on intermittent development work, and between 1912 and 1914 it is stated that 100 tons of high-grade silver-lead ore were shipped, worth about $7,000. In 1915, a shipment of 15 tons sent to the Trail smelter assayed: gold, 0:04 ounce a ton; silver, 98 ounces a ton; lead, 30 per cent; zinc, 14 per cent. In 1918, 240 tons of lower grade ore was hauled from the dumps to the Silver Standard mill for treatment. Harris Mines, Limited, did a little further work late in 1927 when a crosscut was extended from the bottom of the main shaft to pick up the vein. Operations were suspended in December 1927 when a flow of water was encountered. Viking Mining Company of Vancouver did some work during the spring months of 1937. The property is owned by Mrs. B. Sargent of New Hazelton.

The claims are underlain by well-bedded, sedimentary rocks striking north and dipping about 15 degrees west (See Figure 4). A grey, clastic, bedded rock, which has the appearance of an impure sandstone, is most common. Thin section examination shows this rock to be composed of voleanic ash, crystallites, devitrified glass grains, and magnetite shreds, with a strong development of calcite, so that the rock is calcareous tuff.