Hydrothermal precipitation of glauberite is also seen. Color is ordinarily white, yellow, gray or colorless. Luster is vitreous, greasy to dull. Transparency crystals are transparent to translucent. Crystal Habits include the steeply inclined wedge to tabular shaped dipyramidal crystals.
Fracture is conchoidal.
Streak is white. Bitter salty taste, striations on most crystal faces and glauberite will dissolve in water but not as readily as halite. Associated Minerals are calcite , halite , thenardite , gypsum and certain clays . Best Field Indicators are crystal habit, softness, cleavage, taste, solubility and striations.