DICHROITE Meaning and
Definition
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Dichroite, also known as iolite or cordierite, is a mineral that belongs to the silicate group. It has a chemical formula of (Mg,Fe)2Al3(AlSi5O18) and is classified as an orthorhombic crystal system. Dichroite typically occurs in metamorphic rocks and is commonly found in regions with high-grade metamorphism, such as gneisses and schists.
The name "dichroite" arises from its property of exhibiting pleochroism, meaning it displays different colors when viewed from different angles. This characteristic gives rise to its alternate name "iolite," which derives from the Greek word "ios" meaning violet. Dichroite varies in color from deep blue-violet to pale gray or yellow, depending on the orientation of the crystal.
The physical properties of dichroite include a vitreous to greasy luster, with a translucent to transparent appearance. It possesses a hardness of 7-7.5 on the Mohs scale, making it relatively resistant to scratching. Dichroite also has a moderate specific gravity ranging from 2.6 to 2.7, which indicates its density in relation to water.
In addition to its natural occurrence, dichroite can also be used as a gemstone due to its attractive, color-changing nature. It is sometimes used as a substitute for sapphire or tanzanite in jewelry. Apart from its ornamental value, dichroite also finds applications in industrial processes such as refractory manufacturing and as a ceramic material.
Overall, dichroite is a visually striking mineral known for its pleochroism, occurring predominantly in metamorphic rocks and used both in jewelry and industrial settings.
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Another name for the crystal iolite, so called from its exhibition of different colours when viewed in different directions.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
Common Misspellings for DICHROITE
- sichroite
- xichroite
- cichroite
- fichroite
- richroite
- eichroite
- duchroite
- djchroite
- dkchroite
- dochroite
- d9chroite
- d8chroite
- dixhroite
- divhroite
- difhroite
- didhroite
- dicgroite
- dicbroite
- dicnroite
Etymology of DICHROITE
The word "dichroite" is derived from two Greek roots: "di" meaning "two" and "chroma" meaning "color". This name was given to the mineral due to its unique property of exhibiting two different colors when viewed from different angles. It is also known as "iolite", a name derived from the Greek word "ion", meaning "violet", which describes one of the colors that this mineral can display.
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