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Corundum

Index Corundum

Corundum is a crystalline form of aluminium oxide typically containing traces of iron, titanium, vanadium and chromium. [1]

56 relations: Abrasive, Aluminium, Aluminium oxide, Atomic mass, Auguste Victor Louis Verneuil, Barium fluoride, Bauxite, Boric acid, Chromium, Craigmont, Ontario, Crystal, Detritus (geology), Dike (geology), Dunite, Emery (rock), Gneiss, Hematite, Hercynite, Hermann–Mauguin notation, Hexagonal crystal family, Hydrothermal synthesis, Igneous rock, Intrusive rock, Iron, Jacques-Joseph Ebelmen, Lamprophyre, Laser, List of islands of Greece, Magnetite, Marble, Marc Antoine Auguste Gaudin, Metamorphic rock, Mineral, Mohs scale of mineral hardness, Naxos (Crete), Nepheline syenite, North Carolina, Opacity (optics), Oxygen, Peekskill, New York, Pegmatite, Rock (geology), Ruby, Sandpaper, Sanskrit, Sapphire, Schist, Syenite, Tamil language, Terrane, ..., Titanium, Transition metal, Transparency and translucency, Ultramafic rock, Vanadium, Verneuil process. Expand index (6 more) »

Abrasive

An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away by friction.

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Aluminium

Aluminium or aluminum is a chemical element with symbol Al and atomic number 13.

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Aluminium oxide

Aluminium oxide (British English) or aluminum oxide (American English) is a chemical compound of aluminium and oxygen with the chemical formula 23.

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Atomic mass

The atomic mass (ma) is the mass of an atom.

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Auguste Victor Louis Verneuil

Auguste Victor Louis Verneuil (3 November 1856 – 27 April 1913) was a French chemist best known for inventing the first commercially viable process for the manufacture of synthetic gemstones.

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Barium fluoride

Barium fluoride (BaF2) is a chemical compound of barium and fluorine and is a salt.

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Bauxite

Bauxite is a sedimentary rock with a relatively high aluminium content.

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Boric acid

Boric acid, also called hydrogen borate, boracic acid, orthoboric acid and acidum boricum, is a weak, monobasic Lewis acid of boron, which is often used as an antiseptic, insecticide, flame retardant, neutron absorber, or precursor to other chemical compounds.

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Chromium

Chromium is a chemical element with symbol Cr and atomic number 24.

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Craigmont, Ontario

Craigmont is a dispersed rural community, unincorporated place, and ghost town in Carlow/Mayo, Hastings County in Central Ontario, Canada.

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Crystal

A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

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Detritus (geology)

Detritus (adjective detrital) is particles of rock derived from pre-existing rock through processes of weathering and erosion.

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Dike (geology)

A dike or dyke, in geological usage, is a sheet of rock that is formed in a fracture in a pre-existing rock body.

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Dunite

Dunite (also known as olivinite, not to be confused with the mineral olivenite) is an igneous, plutonic rock, of ultramafic composition, with coarse-grained or phaneritic texture.

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Emery (rock)

Emery (or corundite) is a dark granular rock used to make abrasive powder.

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Gneiss

Gneiss is a common distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks.

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Hematite

Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides.

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Hercynite

Hercynite is a spinel mineral with the formula FeAl2O4.

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Hermann–Mauguin notation

In geometry, Hermann–Mauguin notation is used to represent the symmetry elements in point groups, plane groups and space groups.

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Hexagonal crystal family

In crystallography, the hexagonal crystal family is one of the 6 crystal families, which includes 2 crystal systems (hexagonal and trigonal) and 2 lattice systems (hexagonal and rhombohedral).

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Hydrothermal synthesis

Hydrothermal synthesis includes the various techniques of crystallizing substances from high-temperature aqueous solutions at high vapor pressures; also termed "hydrothermal method".

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Igneous rock

Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.

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Intrusive rock

Intrusive rock (also called plutonic rock) is formed when magma crystallizes and solidifies underground to form intrusions, for example plutons, batholiths, dikes, sills, laccoliths, and volcanic necks.

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Iron

Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.

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Jacques-Joseph Ebelmen

Jacques-Joseph Ebelmen (10 July 1814 – 31 March 1852) was a French chemist.

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Lamprophyre

Lamprophyres (Greek λαµπρός (lamprós).

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Laser

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.

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List of islands of Greece

Greece has a large number of islands, with estimates ranging from somewhere around 1,200 to 6,000, depending on the minimum size to take into account.

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Magnetite

Magnetite is a rock mineral and one of the main iron ores, with the chemical formula Fe3O4.

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Marble

Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite.

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Marc Antoine Auguste Gaudin

Marc Antoine Auguste Gaudin (1804–1880) was a French chemist.

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Metamorphic rock

Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form".

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Mineral

A mineral is a naturally occurring chemical compound, usually of crystalline form and not produced by life processes.

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Mohs scale of mineral hardness

The Mohs scale of mineral hardness is a qualitative ordinal scale characterizing scratch resistance of various minerals through the ability of harder material to scratch softer material.

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Naxos (Crete)

Naxos or Naxus (Ancient Greek: Νάχος) was an ancient town of Crete, according to the Scholiast (ad Pind. Isth. vi. 107) celebrated for its whetstones.

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Nepheline syenite

Nepheline syenite is a holocrystalline plutonic rock that consists largely of nepheline and alkali feldspar.

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North Carolina

North Carolina is a U.S. state in the southeastern region of the United States.

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Opacity (optics)

Opacity is the measure of impenetrability to electromagnetic or other kinds of radiation, especially visible light.

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Oxygen

Oxygen is a chemical element with symbol O and atomic number 8.

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Peekskill, New York

Peekskill, officially the City of Peekskill, is a city in Westchester County, New York.

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Pegmatite

A pegmatite is a holocrystalline, intrusive igneous rock composed of interlocking phaneritic crystals usually larger than 2.5 cm in size (1 in); such rocks are referred to as pegmatitic.

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Rock (geology)

Rock or stone is a natural substance, a solid aggregate of one or more minerals or mineraloids.

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Ruby

A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide).

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Sandpaper

Sandpaper and glasspaper are names used for a type of coated abrasive that consists of sheets of paper or cloth with abrasive material glued to one face.

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Sanskrit

Sanskrit is the primary liturgical language of Hinduism; a philosophical language of Hinduism, Sikhism, Buddhism and Jainism; and a former literary language and lingua franca for the educated of ancient and medieval India.

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Sapphire

Sapphire is a precious gemstone, a variety of the mineral corundum, an aluminium oxide.

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Schist

Schist (pronounced) is a medium-grade metamorphic rock with medium to large, flat, sheet-like grains in a preferred orientation (nearby grains are roughly parallel).

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Syenite

Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations (.

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Tamil language

Tamil (தமிழ்) is a Dravidian language predominantly spoken by the Tamil people of India and Sri Lanka, and by the Tamil diaspora, Sri Lankan Moors, Burghers, Douglas, and Chindians.

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Terrane

A terrane in geology, in full a tectonostratigraphic terrane, is a fragment of crustal material formed on, or broken off from, one tectonic plate and accreted or "sutured" to crust lying on another plate.

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Titanium

Titanium is a chemical element with symbol Ti and atomic number 22.

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Transition metal

In chemistry, the term transition metal (or transition element) has three possible meanings.

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Transparency and translucency

In the field of optics, transparency (also called pellucidity or diaphaneity) is the physical property of allowing light to pass through the material without being scattered.

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Ultramafic rock

Ultramafic (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content).

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Vanadium

Vanadium is a chemical element with symbol V and atomic number 23.

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Verneuil process

The Verneuil process, also called flame fusion, was the first commercially successful method of manufacturing synthetic gemstones, developed in the late 1800s by the French chemist Auguste Verneuil.

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Redirects here:

Corrundum, Corundum Structure, Corundum structure, Tranparent alumina.

References

[1] https://en.wikipedia.org/wiki/Corundum

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