Faults and Fissures Vein Deposits
The discovery of silver and gold vein deposits marked the start of Canada’s mining legacy. The discovery of gold at Kirkland Lake and Timmins and silver in Cobalt and near Thunder Bay set the stage for the development of these parts of Canada’s hinterland and founded the development of a mining culture that continues today. …
Gold mining has come a long way in Ontario since the first property, the Richardson Mine in Eldorado near Madoc, fizzled shortly after its 1867 opening. The scattering of small mines working in northwestern Ontario eked out a few ounces of gold in the early part of the twentieth century. The success of the Cobalt camp gave witness to the Mexican proverb, “It takes a silver mine to make a gold mine,” by providing a labour pool and ready financing for the rich gold bonanzas of the Porcupine and Kirkland Lake.
The Porcupine-Timmins area produced 67 million ounces of gold from 48 mines between 1910 and 2004. The smaller but richer grade Kirkland Lake camp had an output from twenty-four mines that gave up 42 million ounces between 1917 and 1990.