aplite

aplite
—aplitic /ap lit"ik/, adj.
/ap"luyt/, n. Petrol.
a fine-grained granite composed essentially of feldspar and quartz.
[1875-80; apl- (var. of HAPLO-) + ITE1]

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Any igneous rock of simple composition, such as granite composed only of alkali feldspar, muscovite mica, and quartz; in a more restricted sense, uniformly fine-grained (less than 0.08 in., or 2 mm), light-coloured igneous rocks that have a characteristic granular texture.

Unlike pegmatite, which is similar but much coarser-grained, aplite occurs in small bodies that rarely contain zones of different minerals. The two rocks may occur together and are assumed to have formed at the same time from similar magmas.

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      any intrusive igneous rock of simple composition, such as granite composed only of alkali feldspar, muscovite mica, and quartz; in a more restricted sense, uniformly fine-grained (less than 2 millimetres [0.08 inch]), light-coloured, intrusive igneous rocks that have a characteristic granular texture. Unlike pegmatite, which is similar but coarser grained, aplite occurs in small bodies that rarely contain zones of different minerals. The two rocks often occur together, cutting across or forming lenses (thin-edged strata) within each other, and are assumed to have formed at the same time from similar magmas (molten materials). See pegmatite.

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Universalium. 2010.

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Look at other dictionaries:

  • Aplite — (pronEng|ˈæplaɪt) in petrology, the name given to intrusive rock in which quartz and feldspar are the dominant minerals. Aplites are usually very fine grained, white, grey or pinkish, and their constituents are visible only with the help of a… …   Wikipedia

  • aplite — n. 1. light colored and fine grained granitic rock consisting chiefly of quartz and feldspars. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • aplite — ● aplite nom féminin (grec aploos, simple) Roche magmatique filonienne, à grain fin, hololeucocrate, généralement granitique ou syénitique …   Encyclopédie Universelle

  • aplite — [ap′līt΄] n. [Ger aplit < Gr haploos, simple (see HAPLO ) + ITE1] a light colored, fine grained igneous rock, similar to granite, that often forms in and near dikes, consisting mainly of quartz and feldspar aplitic [ap lit′ik] adj …   English World dictionary

  • Aplite — Filon aplitique d un granodiorite, Železné hory, République tchèque Filons ap …   Wikipédia en Français

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  • aplite — noun Etymology: probably from German Aplit, from Greek haploos simple more at hapl Date: 1879 a fine grained light colored granite consisting almost entirely of quartz and feldspar • aplitic adjective …   New Collegiate Dictionary

  • aplite — noun A fine grained granitic rock composed mostly of quartz and feldspars …   Wiktionary

  • aplite — a·plì·te s.f. TS petr. roccia eruttiva a grana finissima di colore chiaro formata essenzialmente da quarzo e feldspati {{line}} {{/line}} DATA: 1875. ETIMO: der. del gr. haplóos semplice con 2 ite …   Dizionario italiano

  • aplite — ap·lite …   English syllables

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