As its name implies, it was first described in 1965 for an occurrence in Antarctica where it occurs as crystalline precipitate from a highly saline brine in Don Juan Pond, in the west end of Wright Valley, Victoria Land.
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It was named by the Advisory Committee on Antarctic Names in 1997 after Osmund Holm-Hansen, a plant physiologist, who, working in the 1959–60 season, was one of the first American scientists to visit and conduct research in both Taylor Valley and Wright Valley.