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Sea salt is salt that is produced by the evaporation of seawater. It is used as a seasoning in foods, cooking, cosmetics and for preserving food. It is also called bay salt, [1] solar salt, [2] or simply salt. Like mined rock salt, production of sea salt has been dated to prehistoric times.
Salt comes from two main sources: sea water, and the sodium chloride mineral halite (also known as rock salt). Rock salt occurs in vast beds of sedimentary evaporite minerals that result from the drying up of enclosed lakes, playas, and seas. Salt beds may be up to 350 metres (1,150 ft) thick and underlie broad areas.
The ancient Chinese gradually mastered and advanced the techniques of producing salt. Salt mining was an arduous task for them, as they faced geographical and technological constraints. Salt was extracted mainly from the sea, and salt works in the coastal areas in late imperial China equated to more than 80 percent of national production. [5]
The salt works on the island of Great Inagua owned by Morton Salt. The salt harvesting by the Tsonga women of Baleni on the Small Letaba River, Limpopo, South Africa. [11] Until World War II, salt was extracted from sea water in a unique way in Egypt near Alexandria. [12] Posts were set out on the salt pans and covered with several feet of sea ...
A salt-on-salt process strengthens brine by dissolving rock salt and/or crystal salt in weak brine or seawater before evaporation. Solar evaporation uses the sun to strengthen and evaporate seawater trapped on the sea-shore to make sea salt crystals, or to strengthen and evaporate brine sourced from natural springs where it is made into white ...
The Etosha pan, in the Etosha National Park in Namibia, is another prominent example of a salt pan. The Salar de Uyuni in Bolivia is the largest salt pan in the world. As of 2024, with an estimated 23 million tons, Bolivia holds about 22% of the world's known lithium resources (105 million tons); most of those are in the Salar de Uyuni. [3]
Entities called "seas" which are not divisions of the World Ocean are not included in this list. Excluded are: Lakes, ponds, etc.: Salt lakes with "Sea" in the name: Aral Sea, Dead Sea, Caspian Sea, Salton Sea; Freshwater lakes with "Sea" in the name: Sea of Galilee; Bodies of water identified in lakes (bays, straits, etc.) Ocean gyres
Seawater, or sea water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts (predominantly sodium ( Na +