A Magnesite Rock Or A Carbonate Rock Becomes Magnesiumite When Altered By Metamorphism Or Chemical Weathering
Magnesite is mostly obtained from the mineral magnesite, which is a form of magnesium carbonate (MgCO3) and a member of the calcite group of carbonate minerals. The mineral was created as a byproduct of the alteration of rocks high in magnesium or as a result of the action of magnesium-containing fluids on calcite.
The Liaotung Peninsula in Liaoning Province, China, Radenthein, Austria, and Clark County, Nevada, United States, all have notable deposits. Iron is typically present, and between magnetite and siderite, a complete chemical substitution series exists in which iron replaces magnesium. Magnesium is employed as a refractory material, a catalyst and filler in the manufacture of synthetic rubber, as well as a component in the production of magnesium compounds and fertilisers.
Magnesium can form through a variety of techniques. These more typical ones are discussed below. The carbonation of magnesium-rich rocks during regional, contact, or hydrothermal metamorphism, such as peridotite or serpentinite. This type of magnesium can be cryptocrystalline and contain a lot of chert. When limestone, marble, or other carbonate-rich rocks undergo regional, contact, or hydrothermal metamorphism and are altered by magnesium-rich fluids. This procedure allows for the formation of high-purity Magnesite Market. Formation over ultramafic rocks and other rocks with a high magnesium concentration that are weathering. Nodular magnesium is frequently produced through this formation, which is made possible by the carbonic acid in subterranean waters. Rocks that are carbonate and ultramafic are precipitated as a secondary mineral in veins and fractures.
Magnesite frequently deviates from its expected characteristics, making it challenging to identify in hand specimens. Because it is frequently cryptocrystalline, its cleavage may not be obvious. Magnesium appears to be surprisingly hard because it is frequently silicified or mixed with chert. The apparent effervescence with HCl will be lessened if there is a considerable amount of chert present. The steps listed below should be helpful if you wish to identify magnetite. Some erroneously believe you have a sample that can be subjected to destructive testing.
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