Geographic Minerals

Stony Iron Meteorite

Stony Iron Meteorite

Siderolites, or stony-iron meteorites, are meteorites that contain significant concentrations of both rocky materials (silicates) and nickel-iron metal. Meteorites are classified into three primary groups: irons, stones, and stony-irons, which have a huge number of subclasses. Iron meteorites are.....

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Iron Meteorite (Occurrence, Composition)

Iron Meteorite (Occurrence, Composition)

As they descend, melting, through our planet’s atmosphere, iron meteorites are thick, heavy, and frequently fashioned into odd or even stunning patterns. Siderites, also known as ferrous meteorites, are a kind of meteorite composed mostly of an iron-nickel alloy known as meteoric iron, whic.....

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Stony Meteorite

Stony Meteorite

Meteorites are the final step of this sort of space rock’s life. The rocks were meteors before they became meteorites. They were meteoroids before they were meteors. Meteorite falls are meteorites that are retrieved after being detected as they transit the atmosphere and hit the Earth. All .....

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Nsutite: Properties and Occurrences

Nsutite: Properties and Occurrences

Nsutite is a manganese oxide mineral with formula: (Mn4+1-xMn2+xO2-2x(OH)2x where x = 0.06-0.07). It is a major manganese oxide that occurs in mineable quantities in several terrestrial localities and has also been reported to occur in manganese nodules. It is found in most large manganese deposi.....

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Meteorite (Shooting Star)

Meteorite (Shooting Star)

A meteorite, sometimes known as a ‘shooting star’ or a ‘falling star,’ is a solid piece of debris from an object in deep space that survives its passage through the atmosphere to reach the surface of a planet or moon, such as a comet, asteroid, or meteoroid. In current usage, the word is .....

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Carbonado Diamonds (Definition, Properties)

Carbonado Diamonds (Definition, Properties)

Carbonado, also called as “black diamond,” looks like charcoal and is named after the Portuguese word for “burned.” It is one of the most difficult natural diamonds to work with. It’s an impure, high-density, micro-porous type of polycrystalline diamond made up of diamond, graphite,.....

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Nosean: Properties and Occurrences

Nosean: Properties and Occurrences

Nosean, also known as noselite, is a mineral of the feldspathoid group with the formula: Na8Al6Si6O24(SO4). H2O. It is a mineral of the sodalite group, a silicate, and sulphate of sodium and aluminium. It is an uncommon member of the feldspathoid group that is closely related to Lazurite and Hauy.....

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Northupite: Properties and Occurrences

Northupite: Properties and Occurrences

Northupite is an uncommon evaporite mineral, with the chemical formula Na3Mg(CO3)2Cl. It is an isometric-diploidal mineral containing carbon, chlorine, magnesium, oxygen, and sodium. It is a mineral composed of magnesium sodium carbonate with chloride and occurring in colorless octahedral crystal.....

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Normandite: Properties and Occurrences

Normandite: Properties and Occurrences

Normandite is a brittle orange-brown sorosilicate mineral discovered in 1997 by Charles Normand (born 1963), of Montreal. It is a member of the cuspidine group and, more precisely, the Ca-Ti-dominant analogue of lavenite. Normandite occurs in Khibiny Massif, Kola, Russia; in Poudrette quarry, Mon.....

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Norbergite: Properties and Occurrences

Norbergite: Properties and Occurrences

Norbergite is a mineral in the humite group. It is a nesosilicate mineral with the formula Mg3(SiO4)(F,OH)2. It forms a polysomatic series with chondrodite, humite, and clinohumite and it is often found with one or more of these minerals. It was first described in 1926 for an occurrence in the Ö.....

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Nontronite: Properties and Occurrences

Nontronite: Properties and Occurrences

Nontronite is an iron(III)-rich clay mineral in the smectite group. It is a pale yellow or greenish clay mineral composed primarily of hydrous iron silicate and is classified as montmorillonite with iron replacing some or all of the aluminum. Nontronites typically have a chemical composition that.....

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Nobleite: Properties and Occurrences

Nobleite: Properties and Occurrences

Nobleite is a rare borate mineral with the chemical formula CaB6O9(OH)2·3H2O. It is a transparent mineral containing calcium, boron, hydroxide, and water. It was discovered in 1961, in Death Valley, California, and is named for Levi F. Noble, a USGS geologist, in honor of his contributions to th.....

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