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albite
[ al-bahyt ]
noun
- the sodium end member of the plagioclase feldspar group, light-colored and found in alkalic igneous rocks.
albite
/ ælˈbɪtɪk; ˈælbaɪt /
noun
- a colourless, milky-white, yellow, pink, green, or black mineral of the feldspar group and plagioclase series, found in igneous sedimentary and metamorphic rocks. It is used in the manufacture of glass and ceramics. Composition: sodium aluminium silicate. Formula: NaALSi 3 O 8 . Crystal structure: triclinic
albite
/ ăl′bīt′ /
- A clear to milky white triclinic mineral of the plagioclase group. Albite is common in igneous rocks, especially granite, and in metamorphic rocks that formed at low temperatures. Chemical formula: NaAlSi 3 O 8 .
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Derived Forms
- albitic, adjective
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Other Words From
- al·bit·ic [al-, bit, -ik], adjective
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Word History and Origins
Origin of albite1
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Example Sentences
Small groups of black twin crystals have been lately discovered in the albite rock of Chesterfield in Massachusetts.
Zygadite, zig′a-dīt, n. a variety of albite found in thin twin crystals at Andreasberg, in the Harz Mountains.
The felspar of the granulites is mostly orthoclase or cryptoperthite; microcline, oligoclase and albite are also common.
Albite found at Mineral Hill, Pennsylvania, also exhibits the chatoyancy of moonstone.
Some of the trachytic lavas are said to abound with crystals of albite.
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