What is the mineral anahite?

Anahite is a rare mineral composed primarily of hydrous calcium sulfate (CaSO₄·2H₂O) and is known for its distinctive crystalline form, often displaying a unique, glassy luster. It typically forms in evaporitic environments, such as salt flats or saline lakes, where high evaporation rates concentrate dissolved minerals. Anahite is sometimes found in association with other sulfate minerals and is valued for its aesthetic appeal in mineral collections.