Trona
noun
1.
a monoclinic mineral, grayish or yellowish hydrous sodium carbonate and bicarbonate, Na 2 CO 3 ⋅NaHCO 3 ⋅2H 2 , occurring in dried or partly evaporated lake basins.
noun
1.
a greyish mineral that consists of hydrated sodium carbonate and occurs in salt deposits. Formula: Na2CO3NaHCO3.2H2O
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