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Uses Of Corundum Mineral

Corundum | Earth Sciences Museum | University of Waterloo

Back to Rocks and Minerals Articles. Kathy Feick. Corundum Al 2 O 3. Corundum is a very hard, tough and stable mineral. For all practical purposes, it is the hardest mineral, second only to diamond.

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Fused Alumina – Corundum or Aluminium Oxide - LKAB Minerals

Alumina (also known as Corundum or Aluminium Oxide) is the family name for inorganic compounds with the chemical formula Al2O3. LKAB Minerals offer Brown and White Fused Alumina for the Refractory industry.

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Corundum definition and meaning | Collins English Dictionary

a very hard mineral, aluminum oxide, Al 2 O 3: a dark, coarse variety is used for grinding and polishing; clear, transparent varieties (ruby, sapphire) are used as gems see also Mohs scale Webster's New World College Dictionary, 4th Edition.

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Skyrim:Corundum - The Unofficial Elder Scrolls Pages (UESP)

Corundum is a metal that is mixed with iron to create stronger alloys. The most common alloy is steel, which uses equal amounts of iron and corundum.Smaller amounts of Corundum can be used to create lower-quality alloys that are only slightly stronger than iron; banded iron armor is made this way. Higher-quality alloys can also be created by adding extra corundum to steel, as is done for .

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corundum | Definition of corundum in English by Oxford .

Definition of corundum - extremely hard crystallized alumina, used as an abrasive. Ruby and sapphire are varieties of corundum. . Definition of corundum in English: corundum. noun mass noun. . 'In the 1980s, geologists in Moscow found several small diamonds and minerals, such as zircon, garnet, and corundum, in the alluvia of the River .

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Corundum | Article about corundum by The Free Dictionary

corundum (kərŭn`dəm), mineral, aluminum oxide, Al 2 O 3.The clear varieties are used as gems and the opaque as abrasive materials. Corundum occurs in .

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Corundum | Geology Wiki | FANDOM powered by Wikia

Corundum is a very hard mineral that is commonly cut into gem stones. Corundum in it's natural state is clear, but it often collects impurities forming types such as Sapphire and Ruby. Corundum is the second-hardest hardness on the Mohs Scale. Because of its hardness, corundum is often used.

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Corundum - definition of corundum by The Free Dictionary

Corundum is an extremely hard mineral-almost as hard as diamond on the Mohs scale-and the difference between a ruby and any color sapphire is simply the variety of impurity that happens to permeate the crystal.

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Corundum - Wikipedia

The name "corundum" is derived from the Tamil word Kurundam, which in turn derives from the Sanskrit Kuruvinda.. Because of corundum's hardness (pure corundum is defined to have 9.0 on the Mohs scale), it can scratch almost every other mineral. It is commonly used as an abrasive on everything from sandpaper to large tools used in machining metals, plastics, and wood.

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Corundum Factsheet and Corundum Mineral Information

Corundum that has been synthetically manufactured from bauxite is most often used for this purpose. The abrasive material emery is a mixture of corundum .

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Corundum Al2O3 - RRUFF

Corundum Al2O3 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal. Point Group: 32/m. Crystals hexagonal, prismatic or steeply dipyramidal, tabular, rhombohedral, rarely acicular, typically rough, to 1 m; sectorially striated

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Corundum | Minerals Education Coalition

Corundum. Corundum is a crystalline form of aluminum oxide (Al2O3) with traces of iron, titanium and chromium. It is a rock-forming mineral. It is one of the naturally transparent materials, but can have different colors when impurities are present.

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Corundum Fun Facts and Properties - loveyoutomorrow

Corundum Fun Facts and Properties. In this article, we want to talk about the mineral called corundum. While the word itself may not fill the average person with glee, rest assure, the mineral itself is worth knowing more about.

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Ruby Corundum Crystal Mineral Specimens For Sale

Due to corundum's hardness, 9.0 on the Mohs scale, it can scratch almost every other mineral. It is commonly used as an abrasive, on everything from sandpaper to grinding wheels. Corundum occurs as a mineral in mica schist, gneiss, and some marbles in metamorphic rocks.

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Corundum from basaltic terrains: a mineral inclusion .

heavy minerals of corundum, zircon, spinel and gar-net whereas those cutting across granite bodies andy or metamorphic sequences transport dominantly quartz and zircon with very little (if any) corundum. iii. A geological and geophysical study on the Tertiary

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Oxide Minerals Image Gallery and Descriptions - ThoughtCo

A fine-grained natural mixture of corundum and magnetite is called emery, which was once a widely used mineral for abrasives. Pure corundum is a clear mineral. Various impurities give it brown, yellow, red, blue and violet colors.

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Corundum | Encyclopedia

corundum (kərŭn´dəm), mineral, aluminum oxide, Al 2 O 3.The clear varieties are used as gems and the opaque as abrasive materials. Corundum occurs in .

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Corundum Mineral Specimens - iRocks Fine Minerals .

OB17A-80 Corundum var. Sapphire (twinned) 950.00 Miniature, 3.5 x 3.2 x 2.8 cm Koksha Valley, Khash & Kuran Wa Munjan Districts, Badakhshan Province, Afghanistan

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Corundum | Definition of Corundum by Merriam-Webster

Corundum definition is - a very hard mineral that consists of aluminum oxide occurring in massive and crystalline forms, that can be synthesized, and that is used for gemstones (such as ruby and sapphire) and as an abrasive.

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Corundum Mineral Data

Comments: Thin-Section (Plane Polarized Light) of a brown, twinned zincohögbomite-2N2S crystal with blue corundum. Location: Mikro-Lakka Emery deposit, Kerketeas Mt, Sámos Island, Aegean Islands Department, Greece.

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Corundum: Corundum mineral information and data.

Corundum is used as an abrasive ("Emery"), and the gem varieties of corundum are better-known as Ruby and Sapphire. Corundum in petrology Hide This section is currently hidden.

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Corundum - Wikipedia

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Corundum structure | Article about Corundum structure by .

corundum (kərŭn`dəm), mineral, aluminum oxide, Al 2 O 3.The clear varieties are used as gems and the opaque as abrasive materials. Corundum occurs in .

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Corundum Gemstone Family - Gemstone's Information

Corundum is a mineral species that includes two world's most precious gemstones, ruby and sapphire. Since they are the same mineral, sapphire and ruby are often found together. Sapphire is far more common variety, as ruby requires a specific element and an .

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Effective Hardness & Abrasive Efficiency of Corundum

Concerning this corundum, the Mineral Resources of the United States, pp. 676 and 677, says: "It is supposed that this variety of corundum contains a little water, as it is somewhat less hard and more easily cleavable than the common variety known as sand-corundum."

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Corundum Uses: Gemstones and Abrasives - Gem Coach

Corundum Uses: Abrasives. The corundum mineral is commonly used as an abrasive. It is crushed to a powder of varying size depending on how rough the grinding stone, cutting tools or sanding paper needs to be. A type of rock that is naturally rich in corundum is called Emery. It is the main source of corundum that is used for abrasives.

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Corundum main page - Jackson School of Geosciences

Corundum was the first gem mineral to be synthesized in the lab by a process known today as flame fusion. A somewhat more difficult process, flux growth, is also used to synthesize gem corundum.

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Wisconsin Geological & Natural History Survey » Corundum

Corundum survives erosion and weathering, and can be found as a heavy mineral in sands and gravels. Corundum is extremely rare in Wisconsin, being found exclusively as a redeposited sedimentary mineral.

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SAPPHIRE (variety of Corundum) - Amethyst Galleries: Sapphire

Sapphire is the non-red variety of corundum, the second hardest natural mineral known to mankind. The red variety of corundum is Ruby - all other colors are called sapphire, even pink.. Sapphires are well known among the general public as being blue, but can be nearly any color, even colorless.

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Corundum: The mineral Corundum, Sapphire, Ruby info & pictures

Corundum is best known for its gem varieties, Ruby and Sapphire. Ruby and Sapphire are scientifically the same mineral, but just differ in color. Ruby is the red variety, and Sapphire is the variety that encompasses all other colors, although the most popular and valued color of Sapphire is blue.

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