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Corundum
CHF 39.40
Auf Lager
SKU
HQJESAFF5G2
1 Verfügbar 
Geliefert zwischen Do., 26.02.2026 und Fr., 27.02.2026
Details
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. Transparent specimens are used as gems, called ruby if red, while all other colors are called sapphire.The name "corundum" is derived from the Tamil word meaning ruby, itself derived from the Sanskrit kuruvinda.Due to corundum's hardness pure corundum is defined to have 9.0 Mohs, it can scratch almost every other mineral. It is commonly used as an abrasive, on everything from sandpaper to large machines used in machining metals, plastics and wood. Some emery is a mix of corundum and other substances, and the mix is less abrasive, with a lower average hardness near 8.0.In addition to its hardness, corundum is unusual for its high density of 4.02 g/cm³, which is very high for a transparent mineral composed of the low atomic mass elements aluminium and oxygen.
Weitere Informationen
- Allgemeine Informationen
- GTIN 09786130812645
- Editor Frederic P. Miller, Agnes F. Vandome, John McBrewster
- Genre Chemie
- EAN 9786130812645
- Format Fachbuch
- Titel Corundum
- Herausgeber Alphascript Publishing
- Anzahl Seiten 112
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