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Magnesite

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Magnesite is a mineral with the chemical formula MgCO3 (magnesium carbonate). Mixed crystals of iron(II) carbonate and magnesite (mixed crystals known as ankerite) possess a layered structure: monolayers of carbonate groups alternate with magnesium monolayers as well as iron(II) carbonate monolayersManganese, cobalt and nickel may also occur in small amounts.
Occurrence
Magnesite occurs as veins in and an alteration product of ultramafic rocks, serpentinite and other magnesium rich rock types in both contact and regional metamorphic terrains. These magnesites often are cryptocrystalline and contain silica in the form of opal or chert.
Magnesite is also present within the regolith above ultramafic rocks as a secondary carbonate within soil and subsoil, where it is deposited as a consequence of dissolution of magnesium-bearing minerals by carbon dioxide within groundwaters.
Formation
Magnesite can be formed via talc carbonate metasomatism of peridotite and other ultramafic rocks. Magnesite is formed via carbonation of olivine in the presence of water and carbon dioxide at elevated temperatures and high pressures typical of the greenschist facies.
Magnesite can also be formed via the carbonation of magnesium serpentine (lizardite) via the following reaction:
serpentine + carbon dioxide → talc + magnesite + water
2 Mg3Si2O5(OH)4 + 3 CO2 → Mg3Si4O10(OH)2 + 3 MgCO3 + H2O.
However, when performing this reaction in the laboratory, the trihydrated form of magnesium carbonate (nesquehonite) will form at room temperature. This very observation led to the postulation of a "dehydration barrier" being involved in the low-temperature formation of anhydrous magnesium carbonate. Laboratory experiments with formamide, a liquid resembling water, have shown how no such dehydration barrier can be involved. The fundamental difficulty to nucleate anhydrous magnesium carbonate remains when using this non-aqueous solution. Not cation dehydration, but rather the spatial configuration of carbonate anions creates the barrier in the low-temperature nucleation of magnesite
Magnesite has been found in modern sediments, caves and soils. Its low-temperature (around 40 °C) formation is known to require alternations between precipitation and dissolution intervals.
Magnesium-rich olivine (forsterite) favors production of magnesite from peridotite. Iron-rich olivine (fayalite) favors production of magnetite-magnesite-silica compositions.
Magnesite can also be formed by way of metasomatism in skarn deposits, in dolomitic limestones, associated with wollastonite, periclase, and talc.



Blogs

Magnesium sulfate or magnesium sulphate

12/25/2018

Magnesium sulfate or magnesium sulphate

Magnesium sulfate (or magnesium sulphate) is an inorganic salt (chemical compound) containing magnesium, sulfur and oxygen, with the formula MgSO4. It is often encountered as the heptahydrate sulfate mineral epsomite (MgSO4·7H2O), commonly called Epsom salt, taking its name from a bitter saline spring in Epsom in Surrey, England, where the salt was produced from the springs that arise where the porous chalk of the North Downs meets non-porous London clay. The monohydrate, MgSO4·H2O is found as the mineral kieserite. The overall global annual usage in the mid-1970s of the monohydrate more ...
Our Product Heavy Element Content

12/25/2018

Our Product Heavy Element Content

Heavy elements as toxic elements for animals and plants in magnesium carbonate and oxide have to be very low in content and our products overcome the standard factors! more ...
Table analysis of products for livestock and poultry

12/25/2018

Table analysis of products for livestock and poultry

According to specific conditions for livestock and poultry feed market, different magnetite products are classified for different applications which are presented on attached table.
Due to low levels of heavy metals in our products (see Table attached), we are proud of supplying a wide range of Livestock and Poultry feed market and with supplementation of a high standard, homogeneity and stable conditions. more ...
Magnesite

5/24/2018

Magnesite

Magnesite is a mineral with the chemical formula MgCO3 (magnesium carbonate). Mixed crystals of iron(II) carbonate and magnesite (mixed crystals known as ankerite) possess a layered structure: monolayers of carbonate groups alternate with magnesium monolayers as well as iron(II) carbonate monolayersManganese, cobalt and nickel may also occur in small amounts.
Occurrence
Magnesite occurs as veins in and an alteration product of ultramafic rocks, serpentinite and other magnesium rich rock types in both contact and regional metamorphic terrains. These magnesites often are cryp more ...
Magnesite Applications

5/24/2018

Magnesite Applications

Magnesite occurs as veins in and an alteration product of ultramafic rocks, serpentinite and other magnesium rich rock types in both contact and regional metamorphic terrains. These magnesites often are cryptocrystalline and contain silica in the form of opal or chert.

Magnesite is also present within the regolith above ultramafic rocks as a secondary carbonate within soil and subsoil, where it is deposited as a consequence of dissolution of magnesium-bearing minerals by carbon dioxide within groundwaters.

Similar to the production of lime, magnesite can be burn more ...
Heavy element

5/24/2018

Heavy element

Heavy element content
Considering the specific requirements of defining the products for the livestock and poultry market after consulting the technical and commerce section of the annex for this market was designed
Given the low amounts of heavy metals in products Appendix Table we are proud to provide the market for animal feed and complementary products with a high standard of production uniformity


Our two best-selling products in Animal Feeding market include magnesium carbonate PPM-25 and magnesium oxide CCM PPM-45 whose analysis of heavy elements is more ...
Magnetite Deposits

5/24/2018

Magnetite Deposits

Magnetite is relatively frequent as a mineral, there are, however, only two types of economically important deposits:
The worlds largest reserves are found in deposits of the Veirsch type. These are strata-bound lensoid and nearly monomineralic bodies consisting of coarsely crystalline ,,spar,, magnesite hosted by marine platform sediments. Conspicuous are sedimentary and diagenetic features of the magnesite bearing suites, which indicate formation within a subtidal, evaporitic environment closely associated with sabkhas, mudbars or other inter- to supratidal highs. The coarse c more ...
Magnesium oxide

5/24/2018

Magnesium oxide

Magnesium oxide, or magnesia, is a white hygroscopic solid mineral that occurs naturally as periclase and is a source of magnesium.
Formula: MgO
Molar mass: 40.3044 g/mol
IUPAC ID: Magnesium oxide
Melting point: 2,852 °C
Density: 3.58 g/cm³
Boiling point: 3,600 °C

Magnesia or magnesium oxide is an alkaline earth metal oxide. The majority of magnesium oxide produced today is obtained from the calcination of naturally occurring minerals. Magnesite, MgCO3, being the most common.
Both MgCO3 and Mg(OH)2 are converted to MgO by calcination. T more ...
Links for Each Magnesia Application

4/3/2018

Links for Each Magnesia Application

Agricultural

http://blog.magspecialties.com/category/applications/agricultural/

Electric Grade Steel

http://blog.magspecialties.com/category/applications/electric-grade-steel/

Electric Utilities

http://blog.magspecialties.com/category/applications/electric-utilities/

Flame Retardant / Smoke Suppressant

http://blog.magspecialties.com/category/applications/flame-retardant-s more ...
Wastewater Treatment

4/3/2018

Wastewater Treatment

Magnesium oxide and magnesium hydroxide can both be used in various ways for the treatment of wastewater

In order to repel the unpleasant odor from waste water its main sources H2S and ammonia must be eliminated. This can be achieved by the introduction of MgO in the system with a buffer solution of 9-9,5 pH prohibiting in this way the formation of H2S.
Corrosion of the utilities networks or Struvite tanks is also attributed to the formation of sulfuric acid (H2SO4) alkaline magnesium reagents can help in their protection either with continuous addition magnes more ...
Magnesium Oxide in Animal Feed Supplements

4/3/2018

Magnesium Oxide in Animal Feed Supplements

Magnesium is an essential nutrient for all animals, serving a variety of vital functions within the body. Inadequate magnesium in the diets of grazing animals can cause a serious metabolic disorder known as “Grass Tetany.” The rapid growth rate of grass in Spring means that pastures are often lacking in magnesium. Young grass is higher in simple carbohydrates and protein, but lower in most minerals. Grass tetany occurs when the level of magnesium in blood falls below a critical threshold. Providing a palatable magnesium supplement with high biological availability is an effective more ...