Silver Islet, Ontario

Silver Islet refers to both a small rocky island and a small community located at the tip of the Sibley Peninsula in northwestern Ontario, Canada.

A rich vein of pure silver was discovered on this small island in 1868 by the Montreal Mining Company. At that time, the island was approximately [50 m²] in size and only 2.5 metres above the waters of Lake Superior. In 1870, the site was developed by Alexander H. Sibley's Silver Islet Mining Company which built wooden breakwaters around the island to hold back the lake's waves and increased the island's area substantially with crushed rock. The islet was expanded to over 10 times its original size and a small mining town was built up on the shore nearby.

After most of the purest ore from the original site had been removed, a second vein was discovered in 1878. By 1883, most of the highest quality silver had been extracted and the price of silver had declined. The final straw came when a shipment of coal did not arrive before the end of the shipping season. The pumps holding back the waters of the lake stopped and in early 1884 the islet's mine shafts, which had reached a depth of 384 metres, were flooded. They would never be de-watered, and the mine's underground operations would never be reopened.

Over the 16 years that the mine was in operation, $3.25 million worth of silver was extracted.

The houses originally built to house miners are now used as private summer cottages. The general store has been restored, and serves light meals in its tea-room, in addition to selling a variety of knicknacks and basic foodstuffs.

This is an article written by Syd Hancock, January 21, 1972 on the occasion of Julian Cross's death.

As recounted by Syd Hancock, Silver Islet is the home of Julian (Jules) Cross, founder of Steep Rock Iron Mine in Atikokan, Ontario. Outside the Atikokan Library & museum is a bronze plaque erected by the Ontario Department of Public Records and Archives to mark the historical significance of the Steep Rock Iron Range. On December 29, 1971, the man who unveiled this plaque, and made possible the Steep Rock story, Julian Gifford Cross, died at the age of 83. Born at Silver Islet on July 25, 1888, only four years after the closing of that historic silver mine, his destiny and the future of many others was inevitably associated with mining.

Sleeping Giant Provincial Park has an excellent exhibit in its visitor centre, detailing the structure and history of the mine.

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