What is carnallite? Carnallite is the main component

Placer gold; halide; carnallite

It is a halide mineral composed of potassium and magnesium (KCL·MgCl2·6H2O).

Molecular weight 277 87. Colorless orthorhombic crystal system (orthorhombic crystal system) granular or dense bulk aggregates are produced, and crystals are rare. Density: Relative density.

The pure ones are colorless to white, transparent to opaque. It is very deliquescent in the air and soluble in water. It is pink when it contains impurities.

Bitter taste. Has a fatty sheen. Salty, brittle, non-cleavage, with strong fluorescence.

Mohs hardness 2 3, specific gravity. Heat to 110-120 to decompose into magnesium chloride, tetrahydrate and potassium chloride. Heated to 176 completely dehydrated, with a small amount of hydrolysis.

When heated to 750-800, it is dehydrated and melted, and magnesium oxide is precipitated.

The aggregate is generally granular and dense carnallite is a water-bearing potassium magnesium salt mineral, and the orthorhombic crystal system is a pseudohexagonal bipyramidal aggregate The aggregate is generally granular, dense and fibrous and colorless and transparent or white, yellow and blue.

It is the final product of evaporation in magnesium and potash lakes, and often symbiotic with rock salt and potassium salt salt. Stasfoort in Germany and Solicamsk in Russia are important production areas in the world. Carnallite is abundant in the salt deposits of the Qaidam Basin in China and the potash deposits in Yunnan.

Uses: Mineral raw materials used in the manufacture of potash fertilizers and the extraction of magnesium metal. It is mainly used as a refining agent for refining magnesium metal and a protective agent for the production of aluminum-magnesium alloys.

It is also used as a soldering agent for aluminum-magnesium alloys, a flux for metals, and a raw material for the production of potash and magnesium salts. It is also used in the manufacture of fertilizers and hydrochloric acid, etc.

Identification characteristics: bitter and salty, soluble in water, decomposition in water, deliquescent. Flame violet, indicating potassium content.

The halide minerals (KCL·MGCl2·6H2O) composed of potassium and magnesium are colorless to white and transparent to opaque. It is very deliquescent in the air and soluble in water. 、。

Mohs hardness 2 3, specific gravity. Heat to 110-120 to decompose into magnesium chloride, tetrahydrate and potassium chloride.

Potassium, magnesium.

According to the query Wikipedia, the main components of carnallite are potassium and magnesium halide minerals (KCL·MGCl2·6H2O) with molecular weight. Carnallite is a mineral formed by evaporation in magnesium and potash lakes, and is one of the important raw materials for the production of potassium chloride.

Carnallite belongs to the evaporite mineral, is a hydrated potassium magnesium chloride, the molecular formula is KMGCL3·6 (H2O), its color is changeable, from yellow to white, light rock red, sometimes colorless or coarse reed blue, usually lumpy to fibrous, with rare pseudohexagonal orthorhombic crystals. Carnallite is a highly deliquescent (absorbing moisture from the surrounding air) mineral, and specimens must be stored in airtight containers.

Lop Nur is one of the largest salt lakes in the world. The Quaternary strata of Lop Nur not only contain super-large-scale brine potash deposits, but also precipitate a certain scale of solid potash deposits, and halite is the main solid potassium mineral. Do you know what halite is?

Let's find out.

Introduction to halide

Halite, also known as heterohalite, is a soluble potash mineral and sulfate mineral, which is usually produced together with anhydrite and stone salt. Heteroligen is a hydrous sulfate mineral containing potassium, magnesium and calcium. Triclinic crystal system, axial symmetrical form.

The crystals are plate-like or columnar, and the aggregates are leaf-shaped, fibrous or lumpy. Transparent and colorless, sometimes white or slightly tinged with light gray, pale yellow, flesh red, sometimes brick-red. The glass is shiny, but often dull.

hardness, relative density. Slightly salty and spicy. Dissolves in water and leaves gypsum.

It is mostly produced in potash deposits.

Hete halite appearance

Hexalite rarely forms crystals, and when formed, it is a small flat plate-like crystal, often a fibrous or leaf-like block aggregate. Due to the inclusion of iron oxide, it is often fleshy pink to brick red, and when there are no impurities, it is colorless. White or gray, streaks white. Transparent to translucent.

In general, halite, also known as heterohalite, is a soluble potash mineral and sulfate mineral, which is often produced together with anhydrite and stone salt. Lop Nur is the world's largest salt lake, which has deposited a certain scale of solid potash deposits, and halite is the main solid potassium mineral. Do you understand?

Carnallite is a mineral formed by evaporation in magnesium-containing and potash lakes, and often coexists with halite and potash. Its genesis is related to sedimentary rocks such as marl, claystone, and dolomite, and is formed in evaporative dry rock strata with continuous sedimentation of gypsum, anhydrite, rock salt (rock salt) and potassium salt.

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Carnallite is the final product of evaporation in magnesium and potash lakes, and often coexists with rock salt and potassium salt.