Halite

rock saltsaltmineral saltrocksaltHalite (mineral)rock-saltsalt depositshalite (rock salt)rock salt (halite) rocksalt NaCl
Halite ( or ), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride (Na Cl).wikipedia
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Salt

table saltsalt productioncommon salt
Halite ( or ), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride (Na Cl).
Salt is a mineral consisting primarily of sodium chloride (NaCl), a chemical compound belonging to the larger class of salts; salt in its natural form as a crystalline mineral is known as rock salt or halite.

Sodium

NaNa + sodium ion
Halite ( or ), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride (Na Cl).
Sodium is the sixth most abundant element in the Earth's crust and exists in numerous minerals such as feldspars, sodalite, and rock salt (NaCl).

Evaporite

evaporitesevaporiticevaporite deposits
It commonly occurs with other evaporite deposit minerals such as several of the sulfates, halides, and borates.
At this point, the mineral gypsum begins to form, which is then followed by halite at 10%, excluding carbonate minerals that tend not to be evaporites.

Halide minerals

Halide mineralhalideschloride
It commonly occurs with other evaporite deposit minerals such as several of the sulfates, halides, and borates.

Sedimentary rock

sedimentarysedimentary rockssediments
Halite occurs in vast beds of sedimentary evaporite minerals that result from the drying up of enclosed lakes, playas, and seas.
Common chemical sedimentary rocks include oolitic limestone and rocks composed of evaporite minerals, such as halite (rock salt), sylvite, baryte and gypsum.

Mineral

mineralsmineral depositsaccessory mineral
Halite ( or ), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride (Na Cl).
For example, halite (NaCl), galena (PbS), and periclase (MgO) all belong to the hexaoctahedral point group (isometric family), as they have a similar stoichiometry between their different constituent elements.

Cubic crystal system

cubicisometricface-centered cubic
Halite forms isometric crystals.
In the rock-salt or sodium chloride (halite) structure, each of the two atom types forms a separate face-centered cubic lattice, with the two lattices interpenetrating so as to form a 3D checkerboard pattern.

Salt dome

salt domessalt diapirsalt
Salt domes are vertical diapirs or pipe-like masses of salt that have been essentially "squeezed up" from underlying salt beds by mobilization due to the weight of overlying rock.
A salt dome is a type of structural dome formed when a thick bed of evaporite minerals (mainly salt, or halite) found at depth intrudes vertically into surrounding rock strata, forming a diapir.

Khewra Salt Mine

Khewra Salt MinesHimalayas salt rangesKhewra
The Khewra salt mine is a massive deposit of halite near Islamabad, Pakistan.
After independence, the Pakistan Mineral Development Corporation took over the mine, which still remains the largest source of salt in the country, producing more than 350,000 tons per annum of about 99% pure halite.

Sylvite

sylvine
Salt domes contain anhydrite, gypsum, and native sulfur, in addition to halite and sylvite.
It forms crystals in the isometric system very similar to normal rock salt, halite (NaCl).

Anhydrite

Gypsum karstanhydrideanhydrite stone
Salt domes contain anhydrite, gypsum, and native sulfur, in addition to halite and sylvite.
Anhydrite is commonly associated with calcite, halite, and sulfides such as galena, chalcopyrite, molybdenite, and pyrite in vein deposits.

Gypsum

gypsiferouscalcium sulfate dihydrategypseous
Salt domes contain anhydrite, gypsum, and native sulfur, in addition to halite and sylvite.
It is often associated with the minerals halite and sulfur.

Michigan Basin

Michigan
In the United States and Canada extensive underground beds extend from the Appalachian basin of western New York through parts of Ontario and under much of the Michigan Basin.
Some minerals that have been mined from rocks in the basin include Halite and Gypsum.

Salt glacier

Salt glaciers exist in arid Iran where the salt has broken through the surface at high elevation and flows downhill.
Salt structures are usually composed of halite, anhydrite, gypsum and clay minerals.

Winsford

WhartonWinsford Rock Salt MineWinsford, Cheshire
In the United Kingdom there are three mines; the largest of these is at Winsford in Cheshire, producing, on average, one million tonnes of salt per year.
The United Kingdom's largest rock salt (halite) mine is at Winsford.

History of salt

saltin exchange for the Saharan salt of TaghazaEnglish "-''wich'' towns" and the history of salt
Historically, salt was used as a form of currency in barter systems and was exclusively controlled by authorities and their appointees.
Salt comes from two main sources: sea water and the sodium chloride mineral halite (also known as rock salt).

Salt tectonics

halokinesisdiapirichalokinetic
Salt tectonics, or halokinesis, or halotectonics, is concerned with the geometries and processes associated with the presence of significant thicknesses of evaporites containing rock salt within a stratigraphic sequence of rocks.

Wieliczka Salt Mine

WieliczkaWieliczka Salt MinesMuseum of the Kraków Salt Mines
Its attractions include the shafts and labyrinthine passageways, displays of historic salt-mining technology, an underground lake, four chapels and numerous statues carved by miners out of the rock salt, and more recent sculptures by contemporary artists.

Brine

salt watersalt brinebrine water
Because brine (a solution of water and salt) has a lower freezing point than pure water, putting salt or saltwater on ice that is below 0 °C will cause it to melt — this effect is called freezing-point depression.
Modification of seawater via evaporation results in the concentration of salts in the residual fluid, a characteristic geologic deposit called an evaporite is formed as different dissolved ions reach the saturation states of minerals, typically gypsum and halite.

Rheid

rheicrheological
In all of these cases, halite is said to be behaving in the manner of a rheid.
Halite, the mineral form of salt, is a geological material that behaves as a rheid over relatively short time-periods.

Polyhalite

Polyhalite a mineral fertiliser, is not an NaCl-polymer but hydrated K 2 Ca 2 Mg-sulfate.
Despite the similarity in names between halite (the naturally occurring form of table salt) and it, their only connection is that both are evaporite minerals.

Sodium chloride

NaClsaltroad salt
Halite ( or ), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride (Na Cl).
This same basic structure is found in many other compounds and is commonly known as the halite or rock-salt crystal structure.

Chlorine

Clchlorine gaschlorinated
Halite ( or ), commonly known as rock salt, is a type of salt, the mineral (natural) form of sodium chloride (Na Cl).

Impurity

impuritiesimpurescum
The mineral is typically colorless or white, but may also be light blue, dark blue, purple, pink, red, orange, yellow or gray depending on inclusion of other materials, impurities, and structural or isotopic abnormalities in the crystals.

Sulfate minerals

sulfate mineralsulfatessulfate
It commonly occurs with other evaporite deposit minerals such as several of the sulfates, halides, and borates.