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corundum::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | corundom |
| Type of | mineral |
| Has types | sapphire, aluminium oxide, aluminum oxide, alumina, ruby |
Examples of corundum
corundum
Moreover, corundum and periclase have not been detected in space dust before.
From the economist.com
In 1877 Frenic and Freil made crystal corundum from which small stones could be cut.
From the en.wikipedia.org
It is commonly associated with olivine, magnetite, serpentine, and corundum.
From the en.wikipedia.org
Corundum is the most common naturally occurring crystalline form of aluminium oxide.
From the en.wikipedia.org
Corundum is well known for being the second hardest material on the planet.
From the theepochtimes.com
Sapphire and ruby are impure corundum contaminated with trace amounts of other metals.
From the en.wikipedia.org
Corundum for abrasives is mined in Zimbabwe, Russia, Sri Lanka and India.
From the en.wikipedia.org
Corundum occurs as a mineral in mica schist, gneiss, and some marbles in metamorphicterranes.
From the en.wikipedia.org
Aluminium forms one stable oxide, known by its mineral name corundum.
From the en.wikipedia.org
- Corundom: very hard mineral used as an abrasive
- Corundum is a crystalline form of aluminium oxide with traces of iron, titanium and chromium. It is a rock-forming mineral. It is one of the naturally clear transparent materials, but can have different colors when impurities are present. ...
- An extremely hard mineral, a form of aluminum oxide with the chemical formula Al2O3, that occurs in the form of the gemstones sapphire and ruby; it is used as an abrasive
- A gem mineral of crystallized aluminum and oxygen. Ruby and sapphire are the most valuable corundum.
- A natural mineral whose principle composition is aluminum oxide. Historically a mineral mined in the Middle East and India for use in grinding wheels, Corundum has been replaced by synthetic abrasive minerals, which offer more uniform and consistent physical properties.
- Aluminum oxide, second only to the diamond in hardness. Pure, transparent varieties are the ruby, sapphire, Oriental amethyst, and Oriental topaz.
- (ko-RUN-duhm): a common, colorless mineral that occasionally occurs in gemstone form
- An abrasive or grit added to a tile glaze in order to increase tile slip-resistance.
- A mineral. A red corundum is a ruby by definition. Any other color is a sapphire, which occur in every color.
