Geoscience

Industrial Minerals

Deposits & Occurrences 2006 - Phanerozoic

Brines

NTS Map

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Click to enlarge image of salt crystals

Salt crystals

Click to enlarge image of German Creek saline brine pool

German Creek saline brine pool

 

Salt and other products from saline brines were produced from springs near Winnipegosis and Dawson Bay and from wells at Neepawa and Brandon. Rock salt in the Devonian Prairie Evaporite, of relatively high purity and almost 100 m thick, is present at depth from Roblin to Virden and to the southwest corner of the province. The depth of the salt interval increases from 762 to 1676 m from north to south (Bannatyne, 1971). The salt is intimately associated with the potash deposits.

Monkman’s salt works, north of the town of Winnipegosis, produced a small amount of salt from evaporation of brine from springs 1818 and 1874. The salt was used locally for preserving meat and fish. A small amount of salt was produced by the Northern Salt Company, Limited from a brine spring near Dawson Bay on Lake Winnipegosis in 1941. The Canadian Salt Company produced salt at Neepawa using the vacuum pan evaporating process on brine starting in 1932. The brine was recovered in two wells from depths of 548 and 455 m, respectively (Bannatyne, 1971). Annual salt production ranged from 18 100 to 22 700 tonnes. The plant became uneconomic and closed in 1970 due to cheaper salt obtained as a by-product from solution mining of potash in Saskatchewan (Gunter, 1989).

ERCO Worldwide, a division of Superior Plus Inc., produces sodium chlorate - a bleaching agent for the pulp and paper industry. The plant is located in Hargrave, near Virden Manitoba. The manufacturing process consists of solution mining salt on site. An electrolytic chemical reaction converts the salt into sodium chlorate.

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