Micropegmatite Mi`cro*peg"ma*tite, n. [Micro- + pegmatite.] (Min.) A rock showing under the microscope the structure of a graphic granite (pegmatite). -- {Mi`cro*peg`ma*tit"ic}, a. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • micropegmatite — ▪ mineral       quartz and alkali feldspar intergrowth so fine that it can be resolved only under the microscope; it is otherwise indistinguishable from the coarser intergrowths known as graphic granite. The quartz feldspar interfaces are planar …   Universalium

  • micropegmatite — mi·cro·pegmatite …   English syllables

  • micropegmatite — …   Useful english dictionary

  • Micropegmatitic — Micropegmatite Mi cro*peg ma*tite, n. [Micro + pegmatite.] (Min.) A rock showing under the microscope the structure of a graphic granite (pegmatite). {Mi cro*peg ma*tit ic}, a. [1913 Webster] …   The Collaborative International Dictionary of English

  • micropegmatitic — adjective see micropegmatite * * * micropegmatitic / titˈik/ adjective • • • Main Entry: ↑micropegmatite …   Useful english dictionary

  • Micrographic texture — In petrology, micrographic texture is a fine grained intergrowth of quartz and alkali feldspar, interpreted as the last product of crystallization in some igneous rocks which contain high or moderately high percentages of silica. Micropegmatite… …   Wikipedia

  • granophyre — granophyric /gran euh fir ik/, adj. /gran euh fuyeur /, n. a fine grained or porphyritic granitic rock with a micrographic intergrowth of the minerals of the groundmass. [1880 85; GRANO + PHYRE] * * * ▪ rock       fine grained igneous rock that… …   Universalium

  • SILICE — Le dioxyde de silicium ou silice occupe, parmi les oxydes, une place exceptionnelle; en effet, par ses propriétés cristallochimiques, par ses modes de genèse, par son importance pétrographique, il s’apparente étroitement aux silicates. Dans la… …   Encyclopédie Universelle

  • μικροπηγματίτης — ο (πετρογρ.) σύμφυση ενός κρυστάλλου αλκαλικού αστρίου με έναν κρύσταλλο χαλαζία, η οποία έχει τόσο μικρό μέγεθος ώστε να είναι ορατή μόνο με το μικροσκόπιο. [ΕΤΥΜΟΛ. Αντιδάνεια λ., πρβλ. αγγλ. micropegmatite (βλ. μικρ[ο] )] …   Dictionary of Greek

  • quartz-dolerite — A variety of dolerite which contains interstitial quartz usually intergrown graphically with feldspar, forming patches of micropegmatite. A dyke rock of worldwide distribution, well represented by the Whin Sill rock in N. England …   Dictionary of automotive terms

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