Formula: Na3(HCO3)(CO3).2H2O, acid carbonate
Specific gravity: 2.14
Colour: Colourless, grey, yellow-white
Solubility: Soluble in water; effervesces in acids
Sedimentary environments (typical)
Trona occurs in lacustrine (lakes) evaporite deposits, and also as an efflorescence on soils in arid regions. It is
commonly associated with natron,
thénardite, mirabilite and
USA At Searles Lake, California, trona occurs with borax, hanksite, thénardite and others.
In Green River oil shales, Wyoming, it occurs with shortite, northupite, bradleyite and pirssonite.
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