how diamond formation
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Diamonds: How Do They Form? How a Diamond is Formed. In order for diamond to form there must be an available source of carbon and relatively narrow ranges of temperates and pressures must align. This happens around 100 miles below the crust. Once crystalized the diamonds must be rapidly transported to the surface without undergoing substantial change.
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- The principal host for diamonds are rocks formed in the earth's mantle that are known as eclogite and peridotite that are carried to the earth's surface in magmas known as kimberlit e and lamproite.
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Frequently Asked Questions about CVD Diamond By depositing diamond on a diamond crystal (seed crystal) the size of the crystal can be increased. In this case new carbon atoms are added to the existing diamond lattice. This is called homoepitaxy. On non-diamond substrates a pretreatment of the surface is necessary to allow diamond formation.
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List of diamond mines Diamonds are also mined alluvially over disperse areas, where diamonds have been eroded out of the ground, deposited, and concentrated by water or weather action. There is also at least one example of a heritage diamond mine (Crater of Diamonds State Park).iamonds are also mined alluvially over disperse areas, where diamonds have been eroded out of the ground, deposited, and concentrated by water or weather action. There is also at least one example of a heritage diamond mine (Crater of Diamonds State Park).
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- 1 Diamonds are formed deep within the Earth: between 100 km and 200 km below the surface. 2  The temperatures are about 900 - 1300 C in the part of the Earth's mantle where diamonds form. 3  The pressure is between 45 - 60 kilobars.
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Diamond formation Diamond formation. The Red Arrows in diamond formation at Radom AirShow, 2005. A diamond formation is a formation of four or more aircraft, soldiers on horseback, players in a team sport, etc., wherein the elements of the group adopt a diamond, or kite, shape. 1 Aircraft.
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How Do Diamonds Form? 1) Diamond Formation in Earth's Mantle. Geologists believe that the diamonds in all of Earth's commercial diamond deposits were formed in the mantle and delivered to the surface by deep-source volcanic eruptions. These eruptions produce the kimberlite and lamproite pipes that are sought after by diamond prospectors.iamonds have been found in rocks that are thought to have been subducted and then returned to the surface. These types of rocks are very rare and no known commercial diamond deposits have been developed within them. The diamonds found in these types of deposits have been very small and not suitable for commercial use.
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How Do Diamonds Form? These asteroids hit with such force that pressures and temperatures high enough to form diamonds are produced. If the target rock contains carbon, the conditions needed to form diamonds might occur within the impact area. These types of diamonds are rare and do not play an important role in commercial diamond mining.
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- Diamonds are found in igneous rock which is brought to the surface of the earth by volcanic eruptions bringing magma to the surface. Diamond itself is strictly an allotrope of the element carbon, a mineral, one form of crystal that can be created from carbon.hey also included rocks form from animal and plant remains.   Metamorphic rocks are formed when sedimentary or igneous rocks are  heated and or squashed. 1  The Periodic Table of Elements Life is sustained by a number of chemical elements.
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How Are Diamonds Made? View full size image. Diamonds are made out of carbon — highly organized carbon, that is. Geologists are still guessing how diamonds formed in the Earth from 1 billion to 3 billion years ago, according to a recent study in the journal Nature, but they think the recipe follows something like this:1. Bury carbon dioxide 100 miles into Earth.iew full size image. Diamonds are made out of carbon — highly organized carbon, that is. Geologists are still guessing how diamonds formed in the Earth from 1 billion to 3 billion years ago, according to a recent study in the journal Nature, but they think the recipe follows something like this:
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Diamond Diamond is a rare, naturally-occurring mineral composed of carbon. Each carbon atom in a diamond is surrounded by four other carbon atoms and connected to them by strong covalent bonds.
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- Diamond has a giant molecular structure. Each carbon atom is covalently bonded to four other carbon atoms. A lot of energy is needed to separate the atoms in diamond. This is because covalent bonds are strong, and diamond contains very many covalent bonds. This makes diamond's melting point and boiling point very high.There are no free electrons or ions in diamond, so it does not conduct electricity.Page: 1  1. lot of energy is needed to separate the atoms in diamond. This is because covalent bonds are strong, and diamond contains very many covalent bonds. This makes diamond's melting point and boiling point very high. There are no free electrons or ions in diamond, so it does not conduct electricity. Page: 1  1.
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- The conditions for diamond formation to happen in the lithospheric mantle occur at considerable depth corresponding to the requirements of temperature and pressure. These depths are estimated between 140 and 190 kilometers (87 and 118 mi) though occasionally diamonds have crystallized at depths about 300 km (190 mi).
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Diamonds and Diamond Simulants 1 All diamonds are at least 990,000,000 years old. 2  Diamonds are formed deep within the Earth: between 100 km and 200 km below the surface. 3  The temperatures are about 900 - 1300 C in the part of the Earth's mantle where diamonds form. 4  The pressure is between 45 - 60 kilobars.
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- Diamond fluorescence is visible light produced by the diamond when excited by ultraviolet (UV) light. Different diamonds react different ways to UV light. Some glow different colors while others look whiter.
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How diamond-bearing kimberlites reach the surface of Earth: Acidification provides the thrust Kimberlitic magmas form about 150 km below Earth's surface, i.e. at much greater depths than any other volcanic rocks. The temperatures and pressures at such depths are so high that carbon can crystallize in the form of diamonds.
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Gem Formation: How are Gemstones Created? Today, geologists prefer to describe rock formation as four processes: 1  Molten rock & associated fluids. 2  Environmental changes. 3  Surface water. 4  Gems formed in the earth’s mantle.
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What kind of rock is diamond commonly found in? (sedimentary? igneous? metamorphic?)? Relevance. Rating Newest Oldest. Best Answer: The two main rock types in which diamond is formed are harzburgite and eclogite, both quite rare igneous rock types. Harzburgite is composed of olivine, bronzite (an orthopyroxene), and some pyrope (chrome-and magnesium-rich varieties).Harzburgitic diamonds contain inclusions of olivine, broinzite, and pyrope. Harzburgitic diamonds are more than 3 billion years old.Eclogite is a high pressure metamorphic rock composed of garnet (almandine-pyrope variety) and omphacite (a sodium-rich clinopyroxene).Source(s): http://www.gamineral.org/diamond.htm.arzburgitic diamonds contain inclusions of olivine, broinzite, and pyrope. Harzburgitic diamonds are more than 3 billion years old. Eclogite is a high pressure metamorphic rock composed of garnet (almandine-pyrope variety) and omphacite (a sodium-rich clinopyroxene). Source(s): http://www.gamineral.org/diamond.htm.
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Where Do Diamonds Come From? Experiments and the high density of diamonds tell us that they crystallize at very high pressures. In nature this means that diamonds are created by geologic processes at great depth within Earth, generally more than 150 kilometers down, in a region beneath the crust known as the mantle.
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From A Mine to You Because octahedron diamond crystals are formed at higher temps and higher pressures (up to 1 million 500,000 lbs per square of pressure) and are slow growing, they have a natural tendency to be free of twinning, knotting or surface graining that would interfere with the polishing process.
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Is diamond an igneous metamorphic or sedimentary rock?   However, the diamond itself is a metamorphic  mineral, as it forms under heat and pressure from solid-state  processes. It forms independently of the igneous rock in which it  is found, qualifying it as a type of xenocryst. Sedimentary rocks are formed by the lithification of the sediments  which accumulate from the erosion of … preexisting rocks of all  types. They also included rocks form from animal and plant remains.   Metamorphic rocks are formed when sedimentary or igneous rocks are  heated and or squashed. Answered.
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Where Do Diamonds Come From? Experiments and the high density of diamonds tell us that they crystallize at very high pressures. In nature this means that diamonds are created by geologic processes at great depth within Earth, generally more than 150 kilometers down, in a region beneath the crust known as the mantle. Other processes, explored later in this exhibition, bring diamonds to where people can find them. This diagram shows the interior structure of Earth. The three concentric layers -- the core, mantle, and crust -- formed within a few hundred million years of Earth's coalescence 4.5 billion years ago. The core is primarily an iron-nickel alloy and makes up a large fraction of the mass of Earth.
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- Fluorescence is the reaction of trace minerals within the diamond that cause the diamond to glow when exposed to ultraviolet light. In the laboratory, special ultraviolet lamps are used to check for this but the sun is also a source of ultraviolet rays so diamonds will react in daylight as well.
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How Do Diamonds Form? Smithsonian researchers also found large numbers of tiny diamonds when they were cutting a sample from the Allen Hills meteorite (7). These diamonds in meteorites are thought to have formed in space through high speed collisions similar to how diamonds form on Earth at impact sites.
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How Do Diamonds Form? Coal has rarely played a role in the formation of diamonds. In fact, most diamonds that have been dated are much older than Earth's first land plants - the source material of coal! That alone should be enough evidence to shut down the idea that Earth's diamond deposits were formed from coal.
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Gem Formation: How are Gemstones Created? The cone quickly erodes away, (geologically speaking,) leaving the diamond bearing earth where people can reach them. Gems Rising to the Surface After Formation Since crystals form so far under the surface, you may be wondering how they get to the top where people can mine them.