What does syenite mean?

Definitions for syenite
ˈsaɪ əˌnaɪtsyen·ite

This dictionary definitions page includes all the possible meanings, example usage and translations of the word syenite.


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Wiktionary

  1. syenitenoun

    An igneous rock composed of feldspar and hornblende

Wikipedia

  1. Syenite

    Syenite is a coarse-grained intrusive igneous rock with a general composition similar to that of granite, but deficient in quartz, which, if present at all, occurs in relatively small concentrations (< 5%). Some syenites contain larger proportions of mafic components and smaller amounts of felsic material than most granites; those are classed as being of intermediate composition. The extrusive equivalent of syenite is trachyte.

Webster Dictionary

  1. Syenitenoun

    orig., a rock composed of quartz, hornblende, and feldspar, anciently quarried at Syene, in Upper Egypt, and now called granite

  2. Syenitenoun

    a granular, crystalline, ingeous rock composed of orthoclase and hornblende, the latter often replaced or accompanied by pyroxene or mica. Syenite sometimes contains nephelite (elaeolite) or leucite, and is then called nephelite (elaeolite) syenite or leucite syenite

  3. Etymology: [L. Syenites (sc. lapis), from Syene, Gr. .]

Wikidata

  1. Syenite

    Syenite is a coarse-grained intrusive igneous rock of the same general composition as granite but with the quartz either absent or present in relatively small amounts. The feldspar component of syenite is predominantly alkaline in character . Plagioclase feldspars may be present in small quantities, less than 10%. When present, ferromagnesian minerals are usually hornblende amphibole, rarely pyroxene or biotite. Biotite is rare, because in a syenite magma most aluminium is used in producing feldspar. Syenites are usually either peralkaline with high proportions of alkali elements relative to aluminum, or peraluminous with a higher concentration of aluminum relative to alkali elements. Syenites are formed from alkaline igneous activity, generally formed in thick continental crustal areas, or in Cordilleran subduction zones. To produce a syenite, it is necessary to melt a granitic or igneous protolith to a fairly low degree of partial melting. This is required because potassium is an incompatible element and tends to enter a melt first, whereas higher degrees of partial melting will liberate more calcium and sodium, which produce plagioclase, and hence a granite, adamellite or tonalite.

Chambers 20th Century Dictionary

  1. Syenite

    sī′en-īt, n. a rock composed of feldspar and hornblende.—adj. Syenit′ic, relating to Syene in Egypt: pertaining to syenite. [From Gr. Syēnē, Syene in Egypt.]

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Numerology

  1. Chaldean Numerology

    The numerical value of syenite in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of syenite in Pythagorean Numerology is: 7

Popularity rank by frequency of use

syenite#100000#194591#333333

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"syenite." Definitions.net. STANDS4 LLC, 2024. Web. 28 Mar. 2024. <https://www.definitions.net/definition/syenite>.

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