Magnesite crystals from Brazil (11.4 × 9.2 × 3.6 cm)
General
Category
Carbonate mineral
Formula (repeating unit)
MgCO3
IMA symbol
Mgs[1]
Strunz classification
5.AB.05
Crystal system
Trigonal
Crystal class
Hexagonal scalenohedral (3m) H-M symbol: (3 2/m)
Space group
R3c
Identification
Color
Colorless, white, pale yellow, pale brown, faintly pink, lilac-rose
Crystal habit
Usually massive, rarely as rhombohedrons or hexagonal prisms
Cleavage
[1011] perfect
Fracture
Conchoidal
Tenacity
Brittle
Mohs scale hardness
3.5–4.5
Luster
Vitreous
Streak
white
Diaphaneity
Transparent to translucent
Specific gravity
3.0–3.2
Optical properties
Uniaxial (−)
Refractive index
nω=1.508 – 1.510 nε=1.700
Birefringence
0.191
Fusibility
infusible
Solubility
Effervesces in hot HCl
Other characteristics
May exhibit pale green to pale blue fluorescence and phosphorescence under UV; triboluminescent
References
[2][3][4][5]
Magnesite is a mineral with the chemical formula MgCO 3 (magnesium carbonate). Iron, manganese, cobalt, and nickel may occur as admixtures, but only in small amounts.
Magnesite is a mineral with the chemical formula MgCO 3 (magnesium carbonate). Iron, manganese, cobalt, and nickel may occur as admixtures, but only in...
North Korea is naturally abundant in metals such as magnesite, zinc, tungsten, and iron; with magnesite resources of 6 billion tonnes (second largest in...
capital of Chalkidiki, ever since its settlement. It has the largest magnesite deposits in Northern Greece. The word Γερακινή (Yerakini) comes from γερακίνα...
contained in magnesite, dolomite, brucite, carnallite, talc, and magnesium minerals. China is now the biggest producer of crude magnesite in the world...
MgO:MgCl 2 of 13:1 (instead of the stoichiometry 5:1). Periclase (MgO) and magnesite (MgCO 3) are not abundant raw materials, so their manufacture into Sorel...
also come to describe a thin, top layer of material (sand and cement, magnesite or calcium sulphate), poured in situ on top of the structural concrete...
intrusive ultramafic rock. Sonoma Magnesite Company was formed in 1912 to mine the Red Slide Deposit of magnesite in The Cedars. The mineral is important...
Tamil Nadu Magnesite Limited (TANMAG) (Tamil: தமிழ் நாடு வெள்ளைக்கல் நிறுவனம்) is a state-government undertaking of Government of Tamil Nadu located in...
The most common magnesium carbonate forms are the anhydrous salt called magnesite (MgCO3), and the di, tri, and pentahydrates known as barringtonite (MgCO3·2H2O)...
carbon-magnesite brick, Monolithics (gunning and ramming mixes), and then crucibles. Crucibles began using very large flake graphite, and carbon-magnesite bricks...
metal concentrates are "chrome-magnesite" or "magnesite-chrome" bricks (depending on the relative ratios of magnesite and chromite ores used in their...
seventh place with iron in molarity. It is found in large deposits of magnesite, dolomite, and other minerals, and in mineral waters, where magnesium...
managed by the Germans, and mostly by the German military. The chrome ore, magnesite and lignite mines and the oilfields present across Albania were under...
ore, copper, rock phosphate, limestone, dolomite, gypsum, bentonite, magnesite, diamond, tin, tungsten, graphite, coal etc. It is India's largest iron...
Magnesite Junction railway station is a non–passenger junction railway station in Salem district in Tamil Nadu. It belongs to the Salem railway division...
talc-carbonation or carbonation reactions: talc and the carbonate mineral magnesite. Talc carbonate mineral assemblages are controlled by temperature and...
The Winchester mine is a mining prospect and one of the largest magnesite deposits in Australia and the world. It is located in the Northern Territory...
there is a considerable amount of copper, zinc, tin, chromite, manganese, magnesite and bauxite. Some metals are exported. The Balkan region was the first...
as veins and nodules with brown goethite and other iron oxides in the magnesite-rich saprolite below an iron and silica cap. As with all forms of chalcedony...
XCO2 is above 0.5, the metamorphic reactions favor formation of talc, magnesite (magnesium carbonate), and tremolite amphibole. These are classed as talc-carbonation...
making process used artificial periclase (roasted magnesite) as a furnace lining material. Magnesite refractories are composed of ≥ 85% magnesium oxide...
most common imitation of turquoise encountered today is dyed howlite and magnesite, both white in their natural states, and the former also having natural...
had been discovered previously, but it had been misidentified as impure magnesite by W. E. Ford in 1917. Faust named the new mineral "huntite" in honour...
metals such as gold and copper, and many minerals such as asbestos, Magnesite, perlite, mica, phosphates, zeolites, clay, pumice, quartz, and silica...
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