Salt
exists in nature in several forms remind them of great importance and can be
economically exploited.
1) solutions of
salt (Salt Solutions): It is a solution like a normal sea water, oceans and
salt lakes, springs and groundwater, and in these solutions have salt dissolved
with some other salts of magnesium and vary the degree of concentration of salt
in these solutions by his presence, for example, have more salt concentrated in
the Mediterranean from the Atlantic Ocean and the Red Sea, more focused than
Monday as a semi-closed Sea and the Dead Sea in Palestine more focused as the
Sea of everyone closed from all sides, and the estimated size of the salt
dissolved in the ocean water by about (4.5 million cubic miles)
2) layers of salt (Salt Beds): and be
in the form of lenticular or residue Mttbakh thickness ranges from a few
centimeters to hundreds of meters, and will always be mixed with sediments
other Kaljbs and anhydrite with some potassium salts, and these layers spread
all over the world within the range of sedimentary rock of ages different
geological , and there are in Egypt in the eastern desert, western and these
deposits have no economic importance in terms of exploitation that will be
costly and heavy compared to the costs of extraction of salt from other sources.
3)
salt domes (Salt Domes) and Almchterqat (Diapairs): These domes are located
in Spain, Germany, Romania, Iran and the United States in a recent particularly
important where it is one of the most important geological formations to work
Lakes fisheries petroleum oil.
4)
deposits coastal marshes and internal (Salty Interior and Coastal
)
Physical properties
and chemical composition
We have salt in the nature of a body with mass and granular and crusty, and
features that dissolves in water and Solved neutral and a melting point depends
on the temperature of the solution At zero degrees Celsius melts (35.7 grams)
than in (100 grams) of water, and in the temperature (100 ° C) it melts (39.12
grams) in the same size in any (100 grams) of water, also features in Boukasith
melt snow and ice.
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