Evaporite

Evaporites are sediments that result from the evaporation of saline water. Most evaporites are derived from bodies of sea-water, though saline lakes may also be an important source (e.g. the Great Salt Lake, Utah).

Evaporites start to precipitate when their concentration in water reaches such a level that they can no longer exist as solutes. They precipitate out of solution in the reverse order of their solubilities, such that the order of precipitation is:

Calcite (CaCO₃) and dolomite (CaMg(CO₃)₂)
Gypsum (CaSO₄) and anhydrite[?] (CaSO₄.2H₂O)
Halite[?] (i.e. common salt, NaCl)
Potassium and magnesium salts

		Evaporite
		Evaporites are sediments that result from the evaporation of saline water. Most evaporites are derived from bodies of sea-water, though saline lakes may also be an important source (e.g. the Great Salt Lake, Utah). Evaporites start to precipitate when their concentration in water reaches such a level that they can no longer exist as solutes. They precipitate out of solution in the reverse order of their solubilities, such that the order of precipitation is: Calcite (CaCO₃) and dolomite (CaMg(CO₃)₂) Gypsum (CaSO₄) and anhydrite[?] (CaSO₄.2H₂O) Halite[?] (i.e. common salt, NaCl) Potassium and magnesium salts See also List of minerals
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Evaporite

Evaporite

See also