What is the mineral name of common salt (table salt or rock salt)?

The correct answer is Halite.

Key Points

• Halite is the mineral form of sodium chloride (NaCl), commonly known as rock salt.
• Halite forms through the evaporation of seawater and is typically found in sedimentary rock formations.
• It is an evaporite mineral, which means it crystallizes from evaporating brine.
• Commercially, halite is mined for use as table salt, road salt, and in various industrial processes.
• Halite crystals are typically cubic in structure and can range in color from clear to white, and sometimes even shades of pink or blue due to impurities.

 Additional Information

• Hematite
  • Hematite is an iron oxide mineral with the formula Fe₂O₃.
  • It is one of the most abundant minerals on Earth's surface and in the shallow crust.
  • Hematite is primarily used in the production of iron and steel.
  • The mineral can appear in colors such as black to steel or silver-gray, brown to reddish-brown, or red.
• Limonite
  • Limonite is a generic term for a mixture of hydrated iron oxide minerals.
  • It is often used as a low-grade iron ore and can be found in various geological environments.
  • Limonite is typically yellow-brown or ochre-colored.
• Siderite
  • Siderite is a carbonate mineral composed of iron(II) carbonate (FeCO₃).
  • It is a valuable iron mineral, used in the production of iron and steel.
  • Siderite is typically found in sedimentary deposits and can vary in color from yellow to brownish or gray.