Subject: Geology A chemical sedimentary rock formed by the evaporation of seawater-also known as rock salt. Reference : Skinner B.J., S.C.Porter & J.Park (2004), DYNAMIC EARTH, 5thedition, Jon Wiley & Sons. [ Pics List
An evaporite mineral composed of sodium chloride (NaCl). Halite has perfect cubic cleavage and is often found in cubes with curved faces although it also occurs in granular and compacted form.
naturally occurring crystalline sodium chloride
a chloride mineral with the chemical formula of NaCl. Halite is commonly known as table salt.
Table salt, (NaCl) sodium chloride.
Mineral formed by evaporation, composed of NaCl.
Rock salt; Sodium chloride (NaCl). A sedimentary rock.
common salt occurring in solid form as a mineral (rock salt)
An evaporite mineral, NaCl, common salt
A geological term for rock salt, a mineral which is more than 95 percent sodium chloride (NaCl).
Halite is a mineral composed of rock salt (NaCl or sodium chloride); it is a crystalline chemical that occurs naturally around the world, in oceans and in salt deposits. The oceans on Earth contain salt (roughly 2.6% salt by weight), as do some lakes. The mineral halite, formed of NaCl, is a colorless to gray to brown crystal. Salt has a hardness of 2.5 and a specific gravity of 2.165. Its index of refraction is 1.5442. NaCl melts at 800.0 °C and boils at 1,465 °C. In solution (dissolved in water), salt is neutral (it is neither acidic nor basic). Substance Hardness Talc Amber, Fingernail, Ivory, Shell, Jet 2.5 Gold 2-3 Bronze, Coral, Pearl Iron Glass Opal 5.5-6.5 Amethyst, Chalcedony, Quartz, Steel (pocket knife) Spinel, Topaz Ruby, Sapphire Diamond 10 hardness A substance's hardness is how resistant it is to being scratched. Hardness is measured using the Mohs Scale of Hardness. In the Mohs scale, one substance is harder than another if it can scratch it. For example, a diamond will scratch garnet, but not the other way around, so a diamond in harder than garnet.
Halite is the mineral form of sodium chloride, NaCl, commonly known as rock salt. Halite forms isometric crystals. The mineral is typically colourless to white, but may also be light blue, dark blue, and pink.
