What does leucite mean?
Definitions for leucite
ˈlu saɪtleucite
This dictionary definitions page includes all the possible meanings, example usage and translations of the word leucite.
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Wiktionary
leucitenoun
A mineral of silica-poor igneous, plutonic and volcanic rocks. Chemically, Leucite is a potassium feldspar with insufficient silica to satisfy the chemical bonds. Because of the unfilled bonds, Leucite weathers rapidly and can only be seen as inclusions in freshly broken rock.
Webster Dictionary
Leucitenoun
a mineral having a glassy fracture, occurring in translucent trapezohedral crystals. It is a silicate of alumina and potash. It is found in the volcanic rocks of Italy, especially at Vesuvius
Leucitenoun
a leucoplast
Etymology: [Gr. leyko`s white: cf. F. leucite.]
Wikidata
Leucite
Leucite is a rock-forming mineral composed of potassium and aluminium tectosilicate K[AlSi2O6]. Crystals have the form of cubic icositetrahedra but, as first observed by Sir David Brewster in 1821, they are not optically isotropic, and are therefore pseudo-cubic. Goniometric measurements made by Gerhard vom Rath in 1873 led him to refer the crystals to the tetragonal system. Optical investigations have since proved the crystals to be still more complex in character, and to consist of several orthorhombic or monoclinic individuals, which are optically biaxial and repeatedly twinned, giving rise to twin-lamellae and to striations on the faces. When the crystals are raised to a temperature of about 500 °C they become optically isotropic and the twin-lamellae and striations disappear, although they reappear when the crystals are cooled again. This pseudo-cubic character of leucite is very similar to that of the mineral boracite. The crystals are white or ash-grey in colour, hence the name suggested by A. G. Werner in 1701, from 'λευκος', ' white'. They are transparent and glassy when fresh, albeit with a noticeably subdued 'subvitreous' lustre due to the low refractive index, but readily alter to become waxy/greasy and then dull and opaque; they are brittle and break with a conchoidal fracture. The Mohs hardness is 5.5, and the specific gravity 2.47. Inclusions of other minerals, arranged in concentric zones, are frequently present in the crystals. On account of the color and form of the crystals the mineral was early known as white garnet. French authors in older literature may employ René Just Haüy's name amphigène, but 'leucite' is the only name for this mineral species that is recognised as official by the International Mineralogical Association.
Chambers 20th Century Dictionary
Leucite
lū′sīt, n. a whitish mineral occurring only in volcanic rocks.—adj. Leucit′ic. [Gr. leukos, white.]
Numerology
Chaldean Numerology
The numerical value of leucite in Chaldean Numerology is: 9
Pythagorean Numerology
The numerical value of leucite in Pythagorean Numerology is: 3
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"leucite." Definitions.net. STANDS4 LLC, 2024. Web. 26 Apr. 2024. <https://www.definitions.net/definition/leucite>.
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