Magnesium (Mg) element is the Earth’s crust naturally in Magnesite or magnesium carbonate (MgCO3) brusite Mg (OH2), dolomite MgCa (CO3) and silicate can be found by Mg significant. Magnesite, is the most important economic minerals. Mg-rich rocks like Ultramafic rocks, mafic, including dolomitic rocks also good sources for Magnesite are formed. Magnesite stocks mentioned rocks, shaped by come into existence.

Including:
A) hydrothermal Magnesite

Genesis of these deposits, hydrothermal soLoutions carrying the alteration results on CO2 is Ultrabasic Ray rocks.

 
Magnesite in these processes, usually unseen mass and crystal and often are having a good grade.
B) Substitution of hydrothermal Magnesite

The deposits are hydrothermal soLoutions that originate from the depths of the earth are, are formed. The soLoution on the surface during migration and is dealing with lime, dolomite, or shale on Metasomatism R. substitution, the existence of crystalline deposits Magnesite provide. These reservoirs in Iran is not considered, although expectancy formation of the deposits in the East, northwest of Iran (West Azerbaijan), and goes elsewhere.
C) Leakage of Magnesite

In this type, CO2 in the atmospheric water on the rocks and serpentinized Ultramafic effect will cause chemical reactions and is formed Magnesite. Magnetite reservoirs are in type, often small and are a form streak. In Iran, the ophiolite zone of Naien (Sohail Bakuh) and Sabzevar this species is seen.

D) sedimentary Magnesite

Such deposits in sedimentary environments rich in Mg close to the rocks and the crystalline form of mass and latent (or as travertine) are formed.

These deposits in some cases can be economically exploited but most are low grade. Mass reservoirs Magnesite genesis in freshwater environments requires magnesium ions is being provided. Magnesium ions from the chemical degradation of magnesium-rich rocks, the media or seasonal lake and finally brought the reservoirs created Magnesite provide. In many parts of Iran, all the mentioned conditions is available, but the exploration of sedimentary Magnesite ever thought yet. Magnesite deposits of Late Cretaceous to the Quaternary have been formed. In this period, considering Magnesite conditions, particularly courses for its creation can not be identified.

Although magnesium-rich rocks in many parts of Iran are found (ophiolitic zones), but most of Magnesite reservoirs, Iran is located in the East (South Khorasan and Sistan and Baluchestan province).