It is located about 10 km (6.2 mi) northeast of the town of Temagami near Sauvé Lake in central Cassels Township.

It is named after the Temagami-Lorrain Mining Company, which carried out work on the property in the early 1900s.

[1] Development by the Temagami-Lorrain Mining Company consisted of trenching, stripping and sinking of a 35 m (115 ft) shaft in fractured Nipissing diabase.

Secondary commodities included arsenic, silver, nickel and copper.

[2] In 1925, samples from the waste rock dump showed considerable cobalt bloom and one of the richest had an analysis of 5.87% cobalt, 0.12% nickel, 1.08% copper, 12.48% iron, 14.17% sulfur, 10.39% arsenic, 1.08 oz (31 g) of gold and traces of silver.