The Mining Handbook of Canada

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Investor's Mining Hand Book Company, 1928 - Mineral industries

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Page 106 - In the Kirkland Lake area, and in fact throughout the pre-Cambrian regions of northern Canada, gold is associated with red acid syenite and porphyry, syenite being the more abundant and prominent of these two rocks in the western portion of the Kirkland Lake gold field, and the extent and width of these acid rocks is closely related to the extent and richness of the goldbearing veins associated with them. On the surface of the company's mine property, syenite did not occur except in very narrow stringers,...
Page 45 - ... satisfactorily at that tonnage. In August, the South Bay Power Company completed their hydro-electric plant, and with additional power available the mill capacity was increased to 100 tons daily and more machines put on development. This programme continued until March 2, when the water reserve of the South Bay Power Company was exhausted. Development work being well ahead of ore requirements, it was decided to keep the mill operating at capacity and stop development work. The spring run-off...
Page 54 - ... on the 550and 1,000-foot levels.1 Under an agreement dated June 12, 1924, the Goldale Mines, Limited, received in exchange for its Group No. 1 property (east of Pearl lake) of 120 acres, 228,000 shares; Newray Mines, Limited, received for its property 172,000 shares; and Strong-Bow Mines, Limited, in exchange for the Armstrong-Booth claims received 60,000 shares. The remaining 540,000 shares were taken up by the Coniagas Mines, Limited, at a price of $1,050,000, of which $250,000 was paid on...
Page 45 - ... additional power available the mill capacity was increased to 100 tons daily and more machines put on development. This programme continued until March 2, when the water reserve of the South Bay Power Company was exhausted. Development work being well ahead of ore requirements, it was decided to keep the mill operating at capacity and stop development work. The spring run-off built up the water reserve of the Power Company and development work was resumed on May 4. PRODUCTION Concentrate shipped,...
Page 61 - Mem. 131, 1922, p. 55. 72ci these substances entered through the fissures of a distributive fault. Since the ore was formed it has been jointed and faulted, and the newer fissures so produced are with one exception filled with barren calcite-quartz mixtures. The most important and latest fault is a large shear in which much graphite has been developed, that follows the northern edge of the orebody. In places large lenses of glassy quartz containing free gold have been developed in the shear zone...
Page 61 - ... fault. Since the ore was formed it has been jointed and faulted, and the newer fissures so produced are with one exception filled with barren calcite-quartz mixtures. The most important and latest fault is a large shear in which much graphite has been developed, that follows the northern edge of the orebody. In places large lenses of glassy quartz containing free gold have been developed in the shear zone of the fault, constituting the exception noted above. The composition of the ore indicates...
Page 147 - ... has an average width of 4 inches, and contains both high- and low-grade ores. Ore reserves at the end of the year were 21,000 tons, containing 685,000 ounces, a decrease of 13,000 tons and 109,000 ounces from the previous year. In a general way, the condition at Cobalt is about the same as stated a year ago. Stoping follows closely on development, and new discoveries have not kept pace with production, which was obtained from a number of small stopes in widely separated parts of the property....
Page 147 - ... deposits have been found; the first two are of the replacement type and are irregular in shape. They have been partly diamond-drilled, results indicating unimportant tonnages of low-grade gold and copper. The third deposit is somewhat vein-like in character, in which the mineralization occurs in a schisted and brecciated zone having definite strike and dip. Surface outcrops contained highgrade copper and gold over widths of 3 to 9 feet, but for comparatively short lengths.

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