Gaylussite

carbonate

natron

Formula: Na2Ca(CO3)2.5H2O hydrated normal carbonate
Specific gravity: 2.367
Hardness: 3 to 3½
Streak: White
Colour: Colourless, white
Solubility: Soluble with effervescence in acids. Slightly soluble in water
Environments

Sedimentary environments

Gaylussite is usually found in soda lakes with natron, thermonatrite, trona, pirssonite, calcite, borax and rarely tychite. At Borax Lake, California, USA, it is found with northupite and pirssonite (Dana).

Alteration

Gaylussite dehydrates with efflorescence in dry air. It alters readily to calcite. calcite pseudomorphs after gaylussite have been described.

Back to Minerals