San Juan | Don Quixote | Don Giovanni | Don Cherry | Don | Juan Carlos I of Spain | Don (honorific) | Don Cheadle | Rostov-on-Don | Don Williams | Don Juan | Don Knotts | Don Imus | Don Carlos | Santurce, San Juan, Puerto Rico | Juan Gabriel | Don Rickles | Don Omar | Juan Perón | Don Henley | Juan Pablo Montoya | Salesians of Don Bosco | Don Johnson | Don Drysdale | Strait of Juan de Fuca | Juan Ramón Jiménez | Juan Luna | Don Pasquale | Don Messick | Don Bluth |
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.