mirabilite noun1 •An evaporite, consisting of sodium sulfate, with the chemical formula Na₂SO₄·10H₂O.Bedded deposits of mirabilite occur in coastal areas of East Antarctica, such as the Vestfold Hills and in the Skarvsnes area of Lutzow-Holm Bay, about 1500 km further west (Fig 1.3). — 1987 formsmirabilites
