Pirssonite

minerals

thenardite

northupite

trona

Images
Formula: Na2Ca(CO3)2.2H2O hydrated normal carbonate
Specific gravity: 2.352
Hardness: 3 to 3½
Streak: White
Colour: Colourless, white, greyish
Solubility: Soluble in cold dilute acids with effervescence
Environments

Evaporite Deposits

Pirssonite is an evaporite mineral.

Localities

At the Otjiwalundo Salt Pan, Kunene Region, Namibia, pirssonite occurs with trona and thénardite.

At Borax Lake, California, USA, pirssonite occurs with northupite, tychite and gaylussite.

Near Green River, Wyoming, USA, pirssonite has been recovered from drill cores with shortite, bradleyite, northupite, gaylussite and trona.

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